Page 168 - Ship Construction.DJ Eyres 6Ed

Ch15-H8070.fm Page 157 Wednesday, October 18, 2006 6:56 AM
Launching 157
working the aft end of the ship and installing the ways. In many instances
it also permits higher tides over the way ends when the gates are opened
for a launch.

Ship Lifts

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Whilst large ships may be extruded out of building halls on to a slipway
(Chapter 11) and large sections transferred by similar means to the head of
the slipway and raised on to it for joining and launching, smaller complete
งานห้องสมุด ศูนย์ฝกพาณิชย์นาวี
ships may be transferred to a ship lift for launching. Rail systems are incorp-
orated into the building hall and lead out to the open ship lift. The best
known of these ship lift systems is the patented ‘Syncrolift’ originally used
for slipping ships for repairs and surveys but now also used by some ship-
yards for launching new ships. Ship lifts basically consist of platforms which
can be lowered into the water and the ship landed on or floated off the plat-
form. The platform is raised and lowered mechanically or hydraulically and
is usually provided with transfer arrangements so that the vessel can be
moved on or off the platform either laterally or in line with the platform.
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Further Reading

‘The Vertical Shiplift’s Role in Modern Shipyards’ The Naval Architect
February, 1995.
st
Dunn, Kennedy and Tibbs ‘Launching in the 21 Century’ The Royal
Institution of Naval Architects, Drydocks, Launching & Shiplift Con-
ference, 2003.
Pattison, Dixon and Hodder ‘Launching and Docking: Experiences at VT
Shipbuilding’ The Royal Institution of Naval Architects, Drydocks,
Launching & Shiplift Conference, 2003.

Salisbury and Dobb ‘Recent Dynamic Launches at Barrow in Furness:
Prediction and Reality’. The Royal Institution of Naval Architects,
Drydocks, Launching & Shiplift Conference, 2003.