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Underwater Mount Thrusters
Original Installation
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Underwater Mount Thrusters for Dynamic Positioning are installed
after the vessel is launched.
Because of the need to insure an accurate fit and seal integrity
Thrustmaster also designs and manufactures the receptacles.
The receptacles are mounted into the hull by the shipyard
before launching.
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TH5000 Thruster and Receptacle
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Thruster Replacement
FPSO’s and semi-submersibles hold
position over a drill site for months, even years. Dynamic Positioning
thrusters are in service 24/7 during drilling operations. Interrupting
drilling and leaving the site in order to repair a unit would
be a costly decision. The Underwater Mount Thruster can be removed
and exchanged without taking the vessel out of service.
The videos below show two methods of
installation.
- Dockside (left) refers to a new construction
project where the thrusters are set on the sea floor in 20-30
meters of water with all thrusters being installed at the same
time.
- Replacement (right) refers to replacing
the thruster in the open ocean during drilling operations.
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- Receptacles
are built at Thrustmaster and shipped to the shipyard for installation.
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- Thrusters
arrive on a barge mounted to frames used for transportation.
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- The
cap shown in this image protects the topside during installation.
It will remain in place until the thruster is mounted.
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