Rapid Underwater Bow Thruster Removal Avoids Drydocking

MarineLink.com
Tuesday, May 28, 2013
Photo: Hydrex

A Hydrex diver/technician team mobilized to Tacoma, Washington, U.S. last month to remove the bow thruster of a 294-meter container vessel. The unit needed to be overhauled. Hydrex performed the operation underwater in a very short time frame. This made it possible for the owner to keep his vessel out of drydock.

Together with all the necessary equipment, the team mobilized from the Hydrex office in Clearwater, Florida to the vessel’s location. After they set up a monitoring station on a workboat, the divers started the operation with a detailed inspection of the bow thruster unit and tunnel.

One by one, the diver/technicians then detached the blades and replaced them with blind flanges to prevent oil from leaking from the thruster. In the meantime, initial preparations were made in the bow thruster engine room for the removal of the unit so that there would be no ingress of water once the unit was taken out.

The next step was to secure the gearbox with hoisting equipment. The team then disconnected the bow thruster unit from the engine room and lowered it onto a cradle. This cradle was designed especially for thruster operations. It can be adjusted to the size of the unit. In this manner the thruster is prevented from tipping over and Hydrex divers can remove the unit in one take.

Simultaneously the team installed a blind flange to seal off the thruster tunnel from the engine room. Once the unit was lifted onto the workboat, the team prepared it for transport to the manufacturer.

Performing a job like this on a tight schedule takes a lot of planning. This can only be done successfully by staff who have familiarity with such operations and have the relevant know-how and equipment. Hydrex has a technical department capable of executing all the required planning. Our diver/technicians are trained and qualified to perform the full range of required class-approved repair procedures in even the harshest conditions.

Off-hire time causes a substantial loss of money. The teams therefore worked in shifts to perform the bow thruster removal within the shortest possible time frame. This saved the owner the time and money which going to drydock would have entailed.

www.hydrex.be
 

Maritime Reporter August 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

Gas Turbine Acceptance Test Completed for S. Korea Navy

Rolls-Royce has reached a milestone in the Republic of Korea Navy’s FFX frigate program, with the successful completion of acceptance tests for the MT30 gas turbine.

Mercury Marine Launches Repower Financing

Mercury Marine launched a new repower finance program that aims to make it easier for consumers to get the engine performance they want with flexible financing for a broad range of buyers.

MN 100: Twin Disc, Inc.

1328 Racine Street Racine, WI 53403 Telephone: 262 638 4000 Web: www.twindisc.com President and CEO: John H. Batten Number of employees: 990 The Company: Twin Disc designs,

Ship Repair & Conversion

Cook Joins Horizon Shipbuilding as Operations VP

Horizon Shipbuilding, Inc. announced that Mickey Cook has joined the corporation as the Vice President of Operations for the Bayou La Batre shipyard. Cook, one of the founders of C & G Boatworks,

Update: SS Central America Salvage

Odyssey Marine Exploration completes current phase of SS Central America recovery; 15,500+ gold and silver coins, 45 gold bars recovered to date; 161,000-square meter,

BAE Systems Awarded 'USS Hopper' Repair Contract

US Department of Defense informs BAE Systems Hawaii, Honolulu, Hawaii, is being awarded a not-to-exceed $22,905,907 undefinitized contract action to a previously

Underwater Engineering

SBM Offshore Announces Thunder Hawk Tiebacks

SBM Offshore is pleased to announce it has signed a Production Handling Agreement (PHA) with Noble Energy to produce the Big Bend and Dantzler fields to the

Fifth Jackup Contract for Keppel from Gulf Drilling

Keppel FELS Limited, a wholly owned subsidiary of Keppel Offshore & Marine, has secured a contract from Gulf Drilling International Ltd. of Qatar to build a

Aker Wayfarer Wins 5-Yr Contract from Petrobras

Aker Solutions' subsidiary Aker Oilfield Services (AKOFS) has won a contract worth USD 465 million over five years from Petrobras to provide subsea intervention

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Naval Architecture Navigation Offshore Oil Pipelines Port Authority Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1214 sec (8 req/sec)