Project Summary

The Transocean owned jack-up rig TRIDENT IV was dry towed from Angola to the Zadar Yard in Croatia on the semi-submersible
cargo barge ZHONG REN 3. The rig carried legs with a length of 125 m (410 ft) each. An independent barge motion response
analysis demonstrated that the design accelerations resulted in leg bending moments which were still within the maximum allowable
moments. After a successful loading and seafastening operation, the barge departed Angola on May 24, 2004.      

Scope of Work

The project scope included:

Project Photographs

Photographs courtesy of Hydrographic and Marine Consultants BV.

specialists in marine heavy-lift transportation engineering
naval architects
marine surveyors

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Provide design environmental criteria for the tow route;
Calculate design barge motions and accelerations;
Calculate design linear point accelerations at various levels above deck.
Trident 4 departing on the Zhong Ren 3
Barge ZHONG REN 3 departing with jack-up rig TRIDENT IV on deck