Improvements in Tug Design and Operational Efficiencies for by ghkgkyyt

VIEWS: 294 PAGES: 75

									ASNE Seminar
January, 2009




      Advances in Tug Design and
        Operational Efficiencies
 for Harbour and Offshore Applications
     Authors:
Robert G. Allan P.Eng, FRINA, FSNAME      - Executive Chairman
Kenneth D. Harford P.Eng, MSNAME, MCIMarE            - President


          R O B ER T A L L A N L T D .
          NAVAL ARCHITECTS AND M ARINE ENGINEERS
              Presentation Outline
• Brief history - Robert Allan Ltd.
• Recent tug deliveries in USA
• Advances in tug design
   –   Harbour tugs
   –   Lower noise levels, Comfort Class notation
   –   Lower emissions, Hybrid Tug
   –   Escort towing
   –   Offshore Terminals
   –   SAFETUG
   –   R&D at Robert Allan Ltd.
   –   Sea-keeping Advances
• Convergence
   – Combining lessons learned

                          R O B ER T A L L A N L T D .
                          NAVAL ARCHITECTS AND M ARINE ENGINEERS
                            History
•   2009 is our 79th Year
•   Canada’s oldest firm of Naval Architects
•   Founded in 1930 in Vancouver
•   Three generations of family ownership:
     - Robert Allan, 1930 –1960
     - R.F. (Bob) Allan, 1945 – 1984
     - R.G. (Rob) Allan, 1980 - 2007
•   Management ownership: 2007 to present




                           R O B ER T A L L A N L T D .
                           NAVAL ARCHITECTS AND M ARINE ENGINEERS
 Independent Engineering Services
• Not affiliated with any equipment manufacturers, shipyards
  or ship owners
• We work with them all to provide independent professional
  design services.




                     R O B ER T A L L A N L T D .
                     NAVAL ARCHITECTS AND M ARINE ENGINEERS
                   We Design Tugs
•   All the Tugs shown in this presentation are Robert Allan Ltd. designs
•   No Tugs have been harmed in the making of this presentation




                           R O B ER T A L L A N L T D .
                           NAVAL ARCHITECTS AND M ARINE ENGINEERS
   We Also Design Fireboats
 China
                                Philadelphia




                                             Baltimore
Los Angeles




              R O B ER T A L L A N L T D .
              NAVAL ARCHITECTS AND M ARINE ENGINEERS
                 New York Fireboats
•   Dimensions                                   •    Performance
     – Length, overall : 140’                         – Speed : 20 mph
     – Draft (maximum) : 9'                           – Power rating : 4 x 2,240 bhp
     – Air draft : 39' (maximum)                      – Pumping capacity : (150 psi)
                                                                 two engines 25,000 gpm
                                                                 four engines 50,000 gpm
                                                       – Monitor throw : 700' from midships
                                                       – CBRN and Decon
                                                       – Self-protection using fire monitors




HVAC Design Subcontractor :
Naval Surface Warfare Center Dahlgren Division
CBRN Systems
                  Builder : Eastern Shipbuilding Group, Panama City, Florida

                                R O B ER T A L L A N L T D .
                                NAVAL ARCHITECTS AND M ARINE ENGINEERS
Our Designs Get Built!




       R O B ER T A L L A N L T D .
       NAVAL ARCHITECTS AND M ARINE ENGINEERS
Current US Tugs under construction

• US Navy Z-Tech’s




              R O B ER T A L L A N L T D .
              NAVAL ARCHITECTS AND M ARINE ENGINEERS
Current US Tugs under construction
Particulars          ASD       39-70 Terminal Supply Tug
Length Overall                     - 128'-4"
Length Waterline                   - 119'-6"
Beam, Moulded                      - 44'-4"
Depth, Moulded                     - 19'-5"
Hull Draught, Moulded              - 13'-3"
Draught, Extreme                   - 16’-0”
Tonnage                            - <300 G.R.T. (U.S.A.)

Performance
Bollard Pull Ahead                 - 77 Tons Min.
Bollard Pull Astern                - 71 Tons Min.
Speed (Minimum)                    - 13 Knots
Firefighting Capacity              - 10,560 U.S. GPM



                        R O B ER T A L L A N L T D .
                        NAVAL ARCHITECTS AND M ARINE ENGINEERS
Current US Tugs under construction

 Particulars                                         RAmparts 3000 Tug
 Length Overall                                               - 98'-0"
 Beam, Moulded                                                - 36'-0"
 Depth, Moulded                                               - 17'-8"
 Draft (Summer WL)                                            - 15'-6"
 Complement                                                   - 6

 Performance
 B. Pull Ahead                                                - 77 Tons
 Speed, Min                                                   - 12.5 Knots




                     R O B ER T A L L A N L T D .
                     NAVAL ARCHITECTS AND M ARINE ENGINEERS
Current US Tugs under construction
        ASD 49/100 Class Offshore Terminal Tug

Particulars
Length Overall        - 162'-5"
Length Waterline      - 155'
Beam, Moulded         - 54'
Depth, Moulded        - 22'
Draught, Design       - 21'-2"
Dwt                   - 850 T
Tonnage               -1375 GRT
Complement            - 20
Performance
Bollard Pull Ahead    -110+ Tons
Bollard Pull Astern   - 100+ Tons
Speed                 -13.5+ Knots



                                  R O B ER T A L L A N L T D .
                                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
Current US Tugs under construction

                                                            Z-Tech 7500
                                                              Class Tugs
      Length, Overall                             - 98'-6"
      Length, Waterline                           - 92'-0"
      Beam, Max.                                  - 39'-4"
      Depth, Hull                                 - 16'-5"
      Draft, Max.                                 - 19'-0"
      Bollard Pull                                - 83 Tons
      Speed                                       - 13 Knots

      Number of Vessels:                          - 5 delivered
                                                  - 1 Under Construction
                                                  - 2 On Order

                   R O B ER T A L L A N L T D .
                   NAVAL ARCHITECTS AND M ARINE ENGINEERS
Current US Tugs under construction
                      RAstar 3200 Terminal Supply Tugs

Particulars
Length Overall                     -105’
Beam, Moulded                      - 43’-3”
Beam, Extreme (with Fenders)       - 45’-7”
Depth, Moulded                     - 18’-3”
Design Draft, Moulded              - 13’-2”
Draft, Extreme                     - 18’-7”
Crew                               - 6

Performance
B. Pull Ahead                      - 83 Tons
Speed Ahead                        - 13.5 Knots




                        R O B ER T A L L A N L T D .
                        NAVAL ARCHITECTS AND M ARINE ENGINEERS
           Advances: Harbour Tugs
•   Better maneuverability
•   Greater bollard pull astern
•   Increased speed astern
•   High power/small size




                            R O B ER T A L L A N L T D .
                            NAVAL ARCHITECTS AND M ARINE ENGINEERS
Well Controlled Ship-handling




          R O B ER T A L L A N L T D .
          NAVAL ARCHITECTS AND M ARINE ENGINEERS
     Advances: Harbour Tugs
• Maximum manoeuvrability/fast response
     • Z-drive or VSP propulsion




                   R O B ER T A L L A N L T D .
                    NAVAL ARCHITECTS AND M ARINE ENGINEERS
     Advances: Harbour Tugs
• Astern speeds ~ Ahead speed




               R O B ER T A L L A N L T D .
               NAVAL ARCHITECTS AND M ARINE ENGINEERS
      Advances: Harbour Tugs
• Better astern thrust
     • minimum thrust deduction
     • bollard pull: astern ~ 95% of ahead




                     R O B ER T A L L A N L T D .
                     NAVAL ARCHITECTS AND M ARINE ENGINEERS
        Advances: Harbour Tugs

• Trend to very high powers in small hulls


  1980’s: 79’ @ 40 Tons BP




                                               Currently: 79’ @ 75 Tons BP




                       R O B ER T A L L A N L T D .
                       NAVAL ARCHITECTS AND M ARINE ENGINEERS
Harbour Tugs go Offshore
   100 Ft RAmparts – ATL Tugs




        R O B ER T A L L A N L T D .
        NAVAL ARCHITECTS AND M ARINE ENGINEERS
“Atlantic Spruce” becomes “Felix”




            R O B ER T A L L A N L T D .
            NAVAL ARCHITECTS AND M ARINE ENGINEERS
                       Testimonials
The most manoeuvrable tug I have ever operated.
                                                              Aqua Master Training Skipper
                                                             On the Z-50C Atlantic Spruce

... I'm really impressed of the vessel—how she behaved in high seas. ... For two
days we had force 8 to 9 and sea of 7 to 10 meter waves and got very little water on
deck. ... Roll was not more than 3 to 4 degrees and we surfed on the waves like a
bird! In the North Sea we got force 6 by head and got some spray over the
forecastle and some pitch and roll—not much. We did not reduce speed due to the
head wind/swell and she kept the speed even because of head wind.
                                     Captain Karl Ødegard, Johannes Østensjø dy AS
   On the voyage of the Z-50C tug Felix from Saint John, NB to Norway, March 1997

... the Captain reported average speed 13 knots, wind 60-70 knots beam on and
with heavy seas. ... She is rolling, but behaves very well. They are really fast small
bastards these vessels!
                                        Ing. Carl Amundsen, Johannes Østensjø dy AS
        On the voyage of the Z-50C tug Alex from Norway to Ireland, November 1997



                             R O B ER T A L L A N L T D .
                             NAVAL ARCHITECTS AND M ARINE ENGINEERS
         RAmparts Class Tugs
• A family of “relatively” standard, well-proven ASD
  tug designs
                                                  China




  USA


                              Australia




                   R O B ER T A L L A N L T D .
                   NAVAL ARCHITECTS AND M ARINE ENGINEERS
        RAmparts Class Tugs
• “Typical” tugs for general purpose ship-handling
  and near-coastal work

                Norway
                                                Italy




                  R O B ER T A L L A N L T D .
                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
         RAmparts Class Tugs
• Exceptionally well-received by world market
• Over 100 built or under construction in past
  decade
                                                           Brazil

                Egypt

                              Belgium




                  R O B ER T A L L A N L T D .
                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
          RAmparts Class Tugs
• “Kit” designs available in 79’, 92’, 100’ and 105’ lengths



                                                      Holland
 Turkey




                      R O B ER T A L L A N L T D .
                      NAVAL ARCHITECTS AND M ARINE ENGINEERS
          The Z-Tech Concept       tm



• A real tugboat success story
• PSA operators defined requirements
• International design award winner
• Introduced in 2004: 45 tugs built or
  under construction to date
• True bi-directional performance
• 50, 66 and 82 ton BP versions




                     R O B ER T A L L A N L T D .
                     NAVAL ARCHITECTS AND M ARINE ENGINEERS
             The Z-Tech Concept        tm




• Z-Tech tm Advantages:
   – Large flat, safe working deck forward
   – Works safely under ship flares
   – ASD or Tractor mode from a single hawser
     winch
   – Excellent indirect towing performance

                       • Excellent
                         sea-keeping
                            – 8 trans-
                              Pacific
                              voyages
                            – Indian Ocean
                            – S. China Sea

                         R O B ER T A L L A N L T D .
                         NAVAL ARCHITECTS AND M ARINE ENGINEERS
          The Z-Tech Concept      tm




• Widespread acceptance of concept:
  •   Singapore
  •   Middle East
  •   Australia
  •   USA




                    R O B ER T A L L A N L T D .
                    NAVAL ARCHITECTS AND M ARINE ENGINEERS
    Z-Tech 6000 Ship-Handling Tugs for Panama

                    Delivered: 8
           Under Construction: 13
                        Total: 21


•   Particulars :
     – Length, overall : 90’
     – Beam, moulded : 38’
     – Depth, hull moulded : 16’
     – Draft, maximum : 17.5’                                  “Bocas Del Toro”
     – Bollard pull : 66+ tons                                 - First of the ACP tugs
     – Speed : 12.5+ knots
     – Class : LR 100 A1 Tug, LMC, UMS



                          R O B ER T A L L A N L T D .
                          NAVAL ARCHITECTS AND M ARINE ENGINEERS
  Z-Tech 4500 Class for US Navy
• 4 Tugs currently                  •2010 Delivery
  under construction
  at J.M. Martinac SY
  in Tacoma




                  R O B ER T A L L A N L T D .
                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
     Z-Tech 4500 Class for US Navy

•   Length, overall: 90’
•   Beam, moulded : 38’
•   Depth, hull moulded : 16’
•   Draft, maximum : 16’
•   Bollard Pull : 41 tons
    (minimum)
•   Speed : 12.0 knots
    (minimum)
•   Class : ABS +A1 E
    Towing Vessel, Coastal
    Service, +AMS




                            R O B ER T A L L A N L T D .
                            NAVAL ARCHITECTS AND M ARINE ENGINEERS
Z-Tech 4500 Class for US Navy




           R O B ER T A L L A N L T D .
           NAVAL ARCHITECTS AND M ARINE ENGINEERS
   Advances: Lower Noise Levels
• More HP, Smaller Tugs = Higher Noise Levels?
• Not necessarily So!
• Recent Delivery meets RINA Comfort Class




                 R O B ER T A L L A N L T D .
                 NAVAL ARCHITECTS AND M ARINE ENGINEERS
     Advances: Lower Emissions
Foss Hybrid Tug Project
• Using “Dolphin” Class design by Robert Allan Ltd.
  – 78’ x 34’
  – 5080 bhp
  – 60+ tons BP




                           Typical 2-man
                             west coast
                            harbour tugs


                  R O B ER T A L L A N L T D .
                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
          Hybrid Tug Propulsion

                                                            Auxiliary
                                                           Generators
                                          Motor-
                                        Generators
Smaller
 Diesel
Engines                               Storage
                                      Batteries




                    Z-Drives



                  R O B ER T A L L A N L T D .
                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
       Minimal Emissions Mode

• Idle periods, “No-wake”
  maneuvering
• Main Engines are off-line
• Uses battery storage for
  hotel load, standby
  maneuvering
• One Gen-set comes on-line as needed to
  recharge batteries
• Hotel load : from batteries alone for extended
  periods

                   R O B ER T A L L A N L T D .
                   NAVAL ARCHITECTS AND M ARINE ENGINEERS
                 RAptures
Resolving the Tugboat Energy Equation
  - A paper to be presented by Robert Allan Ltd. at
    Tugnology 2009 – Amsterdam, May 19 & 20/09
  - Organized by International Tug and Salvage
    Magazine
  - Design process to assess the merits of
    propulsion options: Direct Mechanical, Diesel
    Electric, and Hybrids (with or without batteries)



                                             Vancouver from 17th - 21st May

                  R O B ER T A L L A N L T D .
                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
             Advances: Escort Tugs
Escort Operations
• Confined Waters
   – Calm or rough conditions
   – Higher speeds (> 6 Knots)
• Indirect Towing
   – Severe demands on Tug
     and equipment
   – Highest standard of Tug
     Stability
   – "Fail-safe“ design required
• It’s all about the Hull, Skeg
  and Tow Point design


                           R O B ER T A L L A N L T D .
                           NAVAL ARCHITECTS AND M ARINE ENGINEERS
Advances: Escort Tugs
  Z-Tech 6000 Ship-Handling Tug
AUSTRALIA   M.V. “Indee” - indirect towing at 9       knots




             R O B ER T A L L A N L T D .
             NAVAL ARCHITECTS AND M ARINE ENGINEERS
                42m VSP Tug – Ajax
                                                 •    LOA : 137’
                                                 •    Propulsion : VSP
                                                 •    Power : 2 x 4638 bhp = 9276 bhp
                                                 •    Speed : 14+ knots
                                                 •    Bollard Pull : 100 tons
                                                 •    Steering Force : 170 tons (DNV)




•   Owner : Johannes Østensjø dy AS,
    Norway




                           R O B ER T A L L A N L T D .
                            NAVAL ARCHITECTS AND M ARINE ENGINEERS
                Advances: Escort Tugs
               37m VSP Tug – Velox / Tenax
                     “Best Tug of 2005” (Reference : Towing Solutions)
                      First Installation of Voith Schneider “Turbofin”
TENAX comparison with AJAX
• Shorter (121’ vs 137’)
• Less Power (6434 bhp vs 9276 bhp)
• Higher Speed (14.5 vs 14 knots)
• Lower Bollard Pull (71.5 vs 100 tons)
• Steering Force : ~equal


TENAX
• LOA : 121’
• Power : 2 x 3217 bhp
• Speed : 14.5 knots
• Bollard Pull : 71.5 tons
• Steering Force : 172 tons



                                R O B ER T A L L A N L T D .
                                NAVAL ARCHITECTS AND M ARINE ENGINEERS
AVT Escort Tugs


                               Velox / Tenax




    R O B ER T A L L A N L T D .
    NAVAL ARCHITECTS AND M ARINE ENGINEERS
AVT Escort Tugs


                                      Tenax Staple




    R O B ER T A L L A N L T D .
    NAVAL ARCHITECTS AND M ARINE ENGINEERS
         Advances: Sea-keeping
• Proliferation of recent LNG
  deepwater ports has created
  demand for accurate
  prediction of Tug
  performance in a seaway
• No published data available
  prior to about 2 years ago
• Independent Research:
   – SAFETUG Project
   – By Robert Allan Ltd.




                       R O B ER T A L L A N L T D .
                       NAVAL ARCHITECTS AND M ARINE ENGINEERS
 Offshore Operations, Deepwater Ports
• NIMBY!
• SBM or similar LNG deepwater ports
   – NE Gateway, exposed to the Atlantic
• LNG Terminals on exposed shorelines
   – Costa Azul Port in Mexico, exposed to the Pacific
• Ship-handling in > 10’ Hs Seas
• Tug Hull Form must
  minimize motions and
  accelerations to achieve
  service requirements
• Demands new approach to
  Tug Hull Design

                        R O B ER T A L L A N L T D .
                        NAVAL ARCHITECTS AND M ARINE ENGINEERS
                  SAFETUG Project
•   International Joint Industry Project (JIP)
•   Managed by MARIN, Netherlands
•   Sponsored by Oil Companies, Major
    Towing Companies, Major Equipment
    Suppliers, Consultants, Shipyards, and
    Classification Societies
•   Two Phase Project begun in 2006
•   Phase II just commencing
•   3 Steering Committees:
     – Management
     – Operations
     – Design
•   Mr. Robert Allan – Chairman, Design Group



                            R O B ER T A L L A N L T D .
                            NAVAL ARCHITECTS AND M ARINE ENGINEERS
         SAFETUG Objectives
• Identify the various modes of Tug-ship Operations
  at exposed terminals
• Quantify the appropriate Operability Envelopes for
  Tugs while assisting in waves
• Quantify Operational Effectiveness in waves
• Identify the relevant Performance Criteria for
  various types of Tug operation
• Identify the Critical Factors and their relative
  importance in Tug Design, Equipment and
  Operations.
(Also apply to Salvage/Rescue operations)

                  R O B ER T A L L A N L T D .
                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
           SAFETUG – Ph 1
• Phase 1 Results:
  – Detailed investigations of
    Escort Forces in seaway
  – Model Tests of generic ASD
    and VSP Tug Hull Forms
  – Analysis of the “Ultimate Stability” of Tugs in
    Escort Mode in extreme seas
  – Documentation and Analysis of Wave Field
    Around Ships
  – Extensive Operational Input (From Tug
    Masters) into Tug Testing Operations

                  R O B ER T A L L A N L T D .
                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
              SAFETUG – Ph 2
• Phase 2 Key Objectives
  (Commencing Winter 08/09)
  – Review Influence of Key Design
    Parameters on Tug Performance in
    Seas
  – Involve Class in Test Results and
    Prepare Guidelines for Common
    Rules and Design Criteria
  – Develop Winch Modeling Software –
    Motion Responses
  – Develop better Fender Analysis Tools
  – Finalize Tug Motion Behaviour
    Prediction Tools



                       R O B ER T A L L A N L T D .
                       NAVAL ARCHITECTS AND M ARINE ENGINEERS
         Research and Development
•   Robert Allan Ltd. is strongly committed to advancing its position in this
    field by conducting on-going R&D into improved Hull Forms and
    performance-enhancing Appendages
•   The Company not only participates in International R&D Projects such
    as the SAFETUG Project at MARIN, but also conducts independent
    research including extensive model testing.




                            R O B ER T A L L A N L T D .
                            NAVAL ARCHITECTS AND M ARINE ENGINEERS
          Research Results
               by Robert Allan Ltd.


• Hull Forms optimized for Escort Service
  offer truly superior sea-keeping, proven at
  Model and Full-scale
• Improvements adaptable to both VSP and
  Z-drive propulsion
• Better understanding of Tug behaviour in
  proximity to ships in seaway
• Better understanding of Towline Loads in
  High Sea-states
                 R O B ER T A L L A N L T D .
                 NAVAL ARCHITECTS AND M ARINE ENGINEERS
Sea-keeping Improvements in Tugs
• Tested dedicated High-performance VSP Escort
  Tugs (AVT Class)
• AVT Class Tugs demonstrated significantly
  superior sea-keeping

  M.V. Ajax – AVT 40-90:
      First Tug Built with
      Sponsoned Hullform
  100 Tons BP
  170 Tons Fs
  Extensively Model-tested



                       R O B ER T A L L A N L T D .
                       NAVAL ARCHITECTS AND M ARINE ENGINEERS
Sea-keeping Improvements in Tugs
• Led to further testing of Hulls
  with Z-drive Propulsion for
  equivalent Escort and Sea-
  keeping Performance –
  RAstar Class
• Direct comparison Model
  Testing performed
   – RAstar vs. existing “Standard”
     Tug design




                     R O B ER T A L L A N L T D .
                     NAVAL ARCHITECTS AND M ARINE ENGINEERS
                   RAstar Tug Performance
        Roll Amplitude                                                             Roll Accelerations
       Reduced by 45 %                                                            Reduced by app. 65%

           Significant Roll vs 
           Heading 6.5' Sea                115’ Design Model-                             Significant Wh "y" 
 20
                                              tested against                            Acceleration vs Heading 
 18
                                            “Standard” Tug of                                   6.5' Sea
 16                                                                                     1.4
) 14
.
g                                               Same Size
e
d                                                                                       1.2
                                                                                      )
( 12
                                                                                      s
                                                                                      '
l
l                                                                                     g
                                                                                      ( 1
o                                                                                      
R10
                                                                                      n
t                                                                                  
                                                                                  t   o
                                                                                      i
n                                                                                 n   t
                                                                                      a 0.8
a
c                                                                                 a   r
i 8
f                                                                                 c
                                                                                  i   e
                                                                                      l
i                                                                                 f
                                                                                  i   e
n
g                                                                                 n   c
i 6
S                                                                                 g
                                                                                  i   c 0.6
                                                                                  S   A
                                                                                       
                                                                                      "
                                                                                      y
  4                                                                                   " 0.4
                                                                                       
                                                                                      h
                                                                                      W
  2                                                                                     0.2
  0
                                                                                         0
       0      45     90      135   180
                                                                                              0   45     90      135   180
                   Heading
                                                                                                       Heading


                                                 RAstar ‐ 2.0 m GM
                                                 Standard ASD 2.0 m GM



                                         R O B ER T A L L A N L T D .
                                         NAVAL ARCHITECTS AND M ARINE ENGINEERS
           RAstar Tug Concept
•   ASD Design with performance equivalent to VSP
•   Unique Hull Form – from Escort Studies
•   High Inherent Roll-damping Form
•   Excellent Stability Characteristics
•   Maximum Indirect Towing Performance
•   Proven Sea-keeping at Model and Full-scale
•   Wide Industry Acceptance for Offshore Service:
    – 3 Tugs now in Service
    – 24 Under Construction worldwide


                     R O B ER T A L L A N L T D .
                     NAVAL ARCHITECTS AND M ARINE ENGINEERS
RAstar Class Terminal/Escort Tugs
• First of 5 RAstar 3400 Class Tugs
    – now in service at Milford Haven, UK
•   112’ Loa X 48’ Beam
•   105 Tons BP Ahead
•   99 Tons BP Astern
•   14+ Knots




                      R O B ER T A L L A N L T D .
                      NAVAL ARCHITECTS AND M ARINE ENGINEERS
    RAstar Class Terminal/Escort Tugs
“Svitzer Kilroom” -                          RAstar 3900
•   128’ LOA
•   129 Tons BP Ahead
•   123 Tons BP Astern
•   15.7 Knots Ahead




                                           Ship Size No Longer fixed by BP
                                           and Propulsion Power.


                         R O B ER T A L L A N L T D .
                         NAVAL ARCHITECTS AND M ARINE ENGINEERS
               Convergence
• We learn from the operators. Experience from
  diverse world-wide clientele of major Tug and
  Salvage operators = new advanced designs.




                   R O B ER T A L L A N L T D .
                   NAVAL ARCHITECTS AND M ARINE ENGINEERS
              Convergence

• Small Tugs=Scale Models for larger Offshore Tugs




                 R O B ER T A L L A N L T D .
                 NAVAL ARCHITECTS AND M ARINE ENGINEERS
                                    Convergence
LOA : 113 ‘            Power : 6420 bhp / Z-drives              Speed : 13.5 knots           BP : 77 tons
                               - First of 4 vessels for Sakhalin Island operations
Sister : Svitzer “Sakhalin”

                           Ice Class Tug – Svitzer “Aniva”

  LOA         –           260’
  Beam        –           56’-6”
  Depth       –           31’-10”
  Draft       –           24’-7”
  Power       –           4 x 3725hp = 14,900hp




 Combines Robert Allan Ltd. expertise in Icebreaker Design with
  Modern Ship-handling Tug Design and Z-drive Propulsion

Icebreaking : 2’-9” ice @ 3 knots                           Builder : Admiralty Shipyard, St. Petersburg, Russia

                                         R O B ER T A L L A N L T D .
                                         NAVAL ARCHITECTS AND M ARINE ENGINEERS
                            Convergence
   Shallow Draft Icebreaking N. Caspian Sea Supply Vessel
LOA : 213’   Power : 7080 bhp     Bollard Pull : 72 tons         Speed : 13 knots     Draft : 14’




4500 bhp, 3.5’ draft




              Ice Class, Shallow Draft, Zero Discharge, Multi-Cargo, DP, Standby / Rescue
                 Restricted Air Draft , Caspian / Baltic Sea via Volga – Baltic Riverway

                                    R O B ER T A L L A N L T D .
                                    NAVAL ARCHITECTS AND M ARINE ENGINEERS
                   Convergence
          Ship Handling to Escort to Offshore Service
                     Roll Accelerations:
Harbour              - reduced by app. 65%
                              Significant Wh "y"     Improved Sea-keeping
                            Acceleration vs Heading 
                                RAmpage Class
                                    6.5' Sea
                            1.4

                            1.2
                          )
                          s
                          '
                          g
                          ( 1
                           
                          n
                       
                      t   o
                          i
                      n   t
                          a 0.8
                      a
                      c   r
                      i
                      f   e
                          l
                      i
     Escort           n
                      g
                      i
                      S
                          e
                          c
                          c 0.6
                          A
                           
                          "
                          y
                          " 0.4
                           
                          h
                          W
                            0.2

                             0
                                  0      45      90       135   180

                                               Heading


                                      RAstar ‐ 2.0 m GM
                                      Standard ASD 2.0 m GM


                          R O B ER T A L L A N L T D .
                          NAVAL ARCHITECTS AND M ARINE ENGINEERS
RAmpage Class – Multimission Platform
                                                   Mission Profiles
    “Swiss Army Knife of the                          Anchor Handling
       Offshore Industry”                             Ship Handling/Tanker
                                                      Assistance
                                                      Towing
                                                      Bulk Cargo Supply
                                                      Personnel Transfer
                                                      FPSO Hose Handling
                                                      Offshore Support
                                                      Standby / Rescue Services
                                                      Dive Support (Moon Pool)
                                                      Fire Fighting Including Foam
                                                      Oil Recovery And Dispersant
                                                      Dynamic Positioning
                                                      Salvage




                     R O B ER T A L L A N L T D .
                     NAVAL ARCHITECTS AND M ARINE ENGINEERS
              RAmpage Class
Designs available to date:
- RAmpage 5000 (164 ft)
- RAmpage 5500 (180 ft)
- RAmpage 6000 (200 ft)
- RAmpage 6300 (210 ft)


Propulsion Options:
- Z-drive
- Conventional Props
- Direct Mechanical
- Diesel-Electric



                       R O B ER T A L L A N L T D .
                       NAVAL ARCHITECTS AND M ARINE ENGINEERS
               RAmpage 5000
•   164’ x 49’
•   110+ Tons BP
•   Anchor-handling
•   Towing and Berthing
    Capable
•   Hose-handling
•   Fuel and FW Liquid
    Cargoes
•   200T Deck Cargo
    Capacity
•   Dive Support Suite                            RAmpage 5000 Z-M
                                                  “Bourbon Rhode”



                     R O B ER T A L L A N L T D .
                     NAVAL ARCHITECTS AND M ARINE ENGINEERS
SMIT RAmpage 5000 Mission
•   To moor, control, and unmoor ULCC’s at an Offshore SBM, located off the east coast of
    South Africa. Between uplifts: To maintain all SBM associated equipment .
•   Specific Maintenance Tasks
     –   Work On Floating Hoses And The SBM
     –   Surface Work – Including Gas Freeing, Draining, Flushing and Hose and Valve Replacement.
     –   Subsea Work - Moorings, Hoses and Valve Manifolds, from A Mixed Gas Diving TUP, Diving Bell
         and Living Chamber (Over The Side and/or Moonpool)
•   Environmental / Safety
     –   Oil Recovery Unit with Onboard Storage,
     –   FiFi 1 Fire Fighting Capability
•   Towing / Anchor Handling
     –    100 Ton Ahead Bollard Pull, from a Twin Drum Waterfall Winch
     –   Capable of working Modern Designed High Holding Power Anchors.
     –   90 Ton Astern Bollard Pull from a Forward Winch for Mooring Operations.
•   Provision for installation of a 25 Ton SWL “ A “ Frame at the Stern




                                R O B ER T A L L A N L T D .
                                NAVAL ARCHITECTS AND M ARINE ENGINEERS
SMIT RAmpage 5000




     R O B ER T A L L A N L T D .
     NAVAL ARCHITECTS AND M ARINE ENGINEERS
              SMIT RAmpage 5000
Dive Spread




                   R O B ER T A L L A N L T D .
                   NAVAL ARCHITECTS AND M ARINE ENGINEERS
                   SMIT RAmpage 5000
•   Length         162’
•   Breadth        49’
•   Depth          22’

•   Horsepower     7290 bhp
•   Bollard Pull   100 Tons Ahead, 88 Tons Astern

•   Machinery      Medium Speed Diesel, fixed rpm, with 700 kW Shaft Alternators,
                   845 bhp Bowthruster, 2 X 250 kW Auxiliary Generators,
                   1 X 250 kW Emergency Generator.
•   Propulsion     Azimuth Thruster, With CPP.

•   Accommodation:        24 Persons




                                  R O B ER T A L L A N L T D .
                                  NAVAL ARCHITECTS AND M ARINE ENGINEERS
                 RAmpage 6300
LOA                   - 207’
Breadth               - 52’
Depth                 - 23.6’
Draft                 - 21’
Bollard Pull          - 160 tons
Propulsion            - Diesel Electric,
                        3 x Mak 9M25
                        12,000 bhp
Accommodation         - 48 Personnel
Aft Deck              - 3700 ft²
Dynamic Positioning   - DP 2
Fire Fighting         - FiFi 2




Dive Support          - Mixed Gas, Chamber, TUP, Moonpool




                            R O B ER T A L L A N L T D .
                            NAVAL ARCHITECTS AND M ARINE ENGINEERS
       Symposium Impressions
• Next generation vessels will have unique
  Mission requirements not found in the oil
  patch
• Requirements under discussion are within
  the capability of existing technology used in
  commercial designs for Tugs and
  OSV/PSV’s
• Shallow Draft – not available in typical
  OSV/PSV
• Interoperability and efficient mission
  transition requires a total system approach
                 R O B ER T A L L A N L T D .
                 NAVAL ARCHITECTS AND M ARINE ENGINEERS
       Symposium Impressions
• Commercial Tug designs are actively evolving
• Best existing commercial design will need
  substantial modifications
• Substantial Modifications = New Design
• Convergence of Worldwide Design Experience in
  Commercial Tug and Salvage Vessels with the
  Navy’s extensive operational experience can
  achieve the best value for the future

… A Bright Future for Tug Technology!

                 R O B ER T A L L A N L T D .
                 NAVAL ARCHITECTS AND M ARINE ENGINEERS
The End…

                             Questions?




 R O B ER T A L L A N L T D .
 NAVAL ARCHITECTS AND M ARINE ENGINEERS

								
To top