1.  Shiplift Complete Set System Description

Shiplift Complete Set is a modern marine elevator that safely lifts or lowers boats, ships or other marine vessels  from  or to the water.  Once the vessel is lifted to shipyard   elevation   it  can either be repaired in situ on the platform  or   it  can   be  easily moved  ashore  on our  transfer system to dry work berths. With several  work  berths on  shore,many vessels can be serviced at  one  time using only one Shiplift Complete Set.

 

 

2. Transfer  System

The transfer system proposed herein is single level system that is used at several installations. This system uses standard  railway type rail to move vessels  to or from the shiplift using low profile, high capacity Shiplift Complete Set       wheel assemblies. These special wheel assemblies are cast ductile iron with tapered roller bearings for long life and ease  of towing. They are sealed and can be repeatedly submerged in seawater.

The vessel is docked on transfer cradles bearing directly on keel and bilge blocks mounted on the cradles. The transfer cradles are modular and can be assembled to various lengths to suit the vessel's docking requirements. Once docked on the cradles and raised to transfer elevation by the shiplift, the yessel can be moved on shore in the longitudinal direction.

 

 

Should transverse movement be required on shore, the cradles are aligned with the shore transverse rails at crossover location. Jacks are then used to relieve wheel load and the wheels are rotated in groups. Once all wheels are oriented in the same direction, vessel movement can proceed. Transfer movements are normally accomplished using either an airport type tow vehicle or by winch and tackle.

When the vessel is aligned with a selected dry berth  location the wheels can then again be rotated to allow longitudinal transfer into the dry work berth.

This system is well suited to shipyards with limited transfer space on shore. It is also very economical when compared to other transfer systems. It is low in profile providing good access to the vessel's hull when in the work berth.

Alternative transfer system configurations, including dual level rail or multi wheel transporters, can be provided to accommodate preferred shipyard layouts.