No Title Catamaran Ferries Commerical Vessels

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					          S E A            T R A N S P O R T
                       S   O   L   U   T   I   O   N   S




    Stern Landing Vessels
            By: Stuart Ballantyne.

•Sea Transports Solutions Stern Landing Vessels (S.L.V.) have
carved a niche into the small ship market, opening significant
opportunities for builders and operators of passenger, utility,
container, roro, bulk, AHTS and PSV vessels.

•The S.L.V. was a result of Sea Transport Solutions focussing on
possible answers to the operational problems of conventional
landing craft and to produce a vessel suitable for multi purposes.
    Conventional Landing Craft
      Problem Area No. 1:-




Poor Head Sea Capability
•Having a bluff bow , waves in excess of 600mm
(2 feet) start to cause slamming, jarring of the
whole structure and spray enshrouding the cargo
and the wheelhouse…….,
and the speed will drop dramatically
           Conventional Landing Craft
             Problem Area No. 2:-




                 Poor Visibility
• The bow ramp in the stowed position creates a blind sector in
  the wheelhouse visibility. As most of these craft operate in
  coastal, inland and shallow areas, this of course is a problem in
  close quarter navigation. There are many recorded instances of
  groundings due to this fact, and running into windsurfers &
  small fishing boats at anchor has also occurred.
           Conventional Landing Craft
             Problem Area No. 3:-




 Wheelhouse on top of Machinery
• The machinery space below the wheelhouse is just a source of
  noise and vibrations which makes life unpleasant for those
  onboard. For the crew, this can lead to lack of concentration
  and fatigue, particularly on extended voyages.
            Conventional Landing Craft
              Problem Area No. 4:-




      Beaching and Debeaching
• While trying to debeach, the traditional landing barge
  frequently encounters difficulty, particularly where the
  bow has grounded. This encompasses:-
  1. Propellers working inefficiently (ie. in reverse).
  2. Problematic loading of heavy equipment & large trucks.
  3. Bottom suction to sea bed in low draft, soft soil areas.
               Conventional Landing Craft
                 Problem Area No. 5:-




                     Lack of Deadweight
• The stability of a box shape barge is quite limited due to:
   1. Low profile of the GZ curve.
   2. Small freeboard, & shallow deck edge immersion 4-5degrees.
   3. Free surface of numerous below deck flat bottom tanks.
• The stated total deadweight (dwt) of these vessels in most cases includes
  below deck liquid cargoes.
    “On deck” dwt is frequently as low as 45% of the total dwt.
       Conventional Landing Craft
         Problem Area No. 6:-

                 Loss of Ramp

• Constant pounding of the bow ramp may
  loosen securing fixtures and drop the ramp.
• Once the ramp submerges with the vessel
  underway the forces generated will fold the
  ramp under the vessel and tear it off.
      ?   ??   T H E S O L U T I O N ???
     • In 1984, S T S established the criteria for an SLV.
 1. Good head sea capability.
  2. Ability to beach & debeach with ease.
  3. Good visibility from the wheelhouse.
 4. Accommodation clear of machinery space
 5. Finer hull shape with a higher sustainable speed.
 6. Cargo deck spray protection
 7. Less free surface in tanks.
 8. Access to bottom plating when beached
 9. Elimination of the suction effect
10. Total protection of the stern gear
                            Introducing
                                the . . .

      Stern Landing Vessel


  The S.L.V. incorporates a shallow “V” hull with two side pods, offcentre
  shafts & a beaching/protection/aft skeg arrangement.

• The Stern Landing Vessel is now a fine tuned design that has evolved to
  be a commercially & operationally unbeatable landing craft design
  suitable for multi purposes.
     Conventional Landing Craft vs
       50m Stern Landing Vessel

“Gulf Glory”      “Gulf Sky”    “50m S.L.V.”

Deck Area:        Deck Area:    Deck Area:
     357m2             306m2         500m2
TEU (Gr slots):   TEU (Gnd):    TEU (Gnd):
      16                  15           24
Dk Dwt Cap:       Dk Dwt Cap:   Dk Dwt Cap:
     300t.              300t.       1000t.
Bulk Cap:         Bulk Cap:     Bulk Cap:
    400m3             440m3         1000m3
   50m Stern Landing Vessel
Loading Configurations




   Container / Roro    Bulk / Roro
    (Stern View)      (Stern View)
             Stern Landing Vessels
              Currently Operating
    “Sylvan”             20m Papua New Guinea       Utility Boat
•   “Debarge”            20m Western Australia      Utility Boat
•   “Debarge 2”          23m Western Australia      Utility Boat
•   “Norwest Pearl”      23m  Western Australia     Pearling Vessel
•   “Trader”             25m Queensland             Pass/Car Ferry
•   “Deepwater”          35m  Queensland            Bulk Carrier
•   “Lana”               35m  New Zealand           Pass/Car Ferry
•   “Lara V”             35m  New Zealand          Pass/Roro Ferry
•   “Matthew Flinders”   35m  Tasmania             Cargo+Livestock
•   “Tina”               40m  Vanuatu              Pass/Roro Ferry
•   “Havanna”            60m  New Caledonia         Pax/Roro Ferry
•   “Aburri”    **       80m  Northern Territory    Bulk Carrier
•   “Wunma” **           110m Queensland            Bulk Carrier
            S L V Capabilities
  Length.   Speed           Cargo Capacity
• 20 m      9 kts    38 tonnes on deck or 45 t f.o.below deck.
• 25 m      10 kts   95 tonnes on deck or 100 t. f.o. below deck
• 35 m      10 kts   470 tonnes (Sheltered waters)
                     350 tonnes (coastal) - 16 TEU
• 50 m      11 kts   1100 tonnes (sheltered waters)
                     900 tonnes (coastal) - 48 TEU
                      (similar under deck tank capacity.)
• 70 m      12 kts   1550 tonnes coastal - 130 TEU
• 80 m      13 kts   3000 tonnes coastal - 160 TEU
• 110 m     11 kts   5300 tonnes coastal - 270 TEU
  Stern Landing Vessels
   - Photo Gallery -




20 m Stern Loading Vessel - “M.V. SYLVAN”
           Stern Landing Vessels
            - Photo Gallery -




23 m Stern Landing Vessel - “M.V. NORWEST PEARL”
  Stern Landing Vessels
   - Photo Gallery -




             35 m Low Profile
Stern Landing Vessel - “M.V. DEEPWATER”
         Stern Landing Vessels
          - Photo Gallery -




35 m Stern Landing Vessel - “M.V. MATTHEW FLINDERS”
 Stern Landing Vessels
  - Photo Gallery -




35 m Stern Landing Vessel - “M.V. LANA”
 Stern Landing Vessels
   - Photo Gallery -




40 m Stern Landing Vessel - “M.V. TINA”
Stern Landing Vessels
 - Photo Gallery -




50 m Stern Landing Vessel
         Stern Landing Vessels
          - Photo Gallery -




60 m Stern Landing Vessel - for Military Use
          60m Stern Landing Vessel
         1200 Tonnes on deck (coastal)




Note:- full width of stern ramp and low hinge position,
     for easy and rapid loading and discharging
    Stern Landing Vessel Applications

• Float on / float off utility vessel deployment
• Floating dock-like properties for recovering /
  discharging floating cargo
• Protected stern gear to facilitate safe and easy
  beaching
• Platform Supply Vessels
• Anchor Handling, Towing & Supply Vessels
        70m SLV –1800dwt 13kts




144 TEU (shown with self contained crane)
    Stern Landing Vessels
 3300 Cargo Dwt –3.5m draft




80 m Stern Loading Vessel - “M.V. ABURRI”
Stern Landing Vessel “WUNMA”                -




110m x 22 x 3.7m draft, 5,300 cargo dwt, 11kts
   Stern Landing Vessels
    - Photo Gallery -




110 m Stern Loading Vessel - “M.V. WUNMA”
S E A          T R A N S P O R T
            S O L U T I O N S

Contact:-


                 Phone: +44 20 7681 1505
                 Fax: +44 870 168 0554
             Web: www.catamaranferries.com
             Email: info@catamaranferries.com

                   Exclusive agents for:-
“Sea Transport Consultants - Naval Architects”

				
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posted:8/9/2011
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