Underwater Bow Thruster Reinstallation In Tacoma

Marinelink.com
Thursday, July 18, 2013

Three months after Hydrex diver/technicians removed the bow thruster of a 294-meter container vessel in Tacoma, a Hydrex team once again mobilized to this location to reinstall the overhauled unit underwater with the use of the Hydrex flexible mobdock.


The superintendent of the ship was very satisfied with the first part of the operation. The job was completed well within the available time frame thanks to good team work of the Hydrex divers, the ship staff and the floating crane operator.

 

For this reason the customer asked Hydrex to take care of the reinstallation as well, which was carried out last month.


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 team positioned the bow thruster 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, making it much easier to handle. The Hydrex divers could lower the unit into the water and maneuver it inside the thruster tunnel in one take. The team positioned the bow thruster and secured the unit.


The team then used the lightweight flexible mobdocks developed by Hydrex to close off the thruster tunnel on both sides. This allowed the diver/technicians to evacuate all the water from the tunnel and create a dry working environment around the bow thruster. The thruster propeller blades were then reinstalled one by one. The team completed the operation by reconnecting the thruster unit to the engine room.


Hydrex can assist shipowners with almost any problem they encounter with their vessel’s thruster. A wide range of repair or maintenance work can be carried out to all types of thrusters. An entire unit can be overhauled, propeller blades or seals can be replaced or repair work on a specific part of a thruster can be performed by Hydrex diver/technicians on site. All of these repairs can be carried out without the need to drydock the vessel.


Off-hire time causes a substantial loss of money. The teams therefore worked in shifts during both the removal en reinstallation of the bow thruster. This was done to perform the bow thruster operations within the shortest possible time frame, saving the owner the time and money which going to drydock would have entailed.
 

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter April 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

Alfa Laval HCO Filter Approved for Validation Testing

A manufacturer of two-stroke engines has agreed to validation tests of an Alfa Laval hydraulic control oil (HCO) filter . The approval to test the final HCO filter

GE Gas Turbines for Japan's New Warship

GE's Marine Solutions announced it will provide IHI, Tokyo, Japan, with two LM2500 aeroderivative marine gas turbines for the Japan Maritime Self Defense Force's (JMSDF) new 8,

WSS Offers ‘One Stop Shop’ Approach to Bunkering

Ship operators who rely on a myriad of companies for their global bunkering needs are wasting time, money and energy, with no guarantee of standardized quality of products and services,

Ship Repair & Conversion

Great Lakes Shipyard Performs USCG Drydocking

On April 25, Great Lakes Shipyard hauled out the U.S. Coast Guard’s 125’ x 52’ Aids to Navigation Barge (12001). Using the Shipyard’s 770-ton Marine Travelift,

Sipu Muin Modernization Work to Begin in May

Canadian Coast Guard plans upgrades for Air Cushion Vehicle   A scheduled modernization of the Canadian Coast Guard CCGS Sipu Muin will see the Air Cushion Vehicle

Raytheon Anschütz Steering Gear Control for Luxury Cruise Ships

The German navigation system manufacturer Raytheon Anschütz was awarded a retrofit contract of steering gear control systems for two luxury cruise ships chartered by Noble Caledonia Ltd.

Container Ships

GPA Will Continue Weighing Containers at No Cost to Shippers

The U.S. Coast Guard announced last week that state-calibrated scales already in use at the Port of Savannah meet a new requirement of the international Safety of Life at Sea (SOLAS) Convention.

ITIC Reports on Ship Agents' Costly Transhipment Errors

International Transport Intermediaries Club (ITIC) says it continues to deal on a regular basis with claims resulting from errors by agents involving transhipment cargoes.

Maersk Returns to Liverpool

Maersk has been welcomed to the Port of Liverpool with a formal reception for its feeder vessel Antwerp. The event on April 27 was attended by Seago and Maersk representatives along with customers,

Underwater Engineering

BAE Systems Bags USN Award for Submarine Propulsors

BAE Systems has received a $72 million contract from the U.S. Navy to produce and deliver propulsor systems for Block IV Virginia-class (SSN 774) submarines. The

Highest-Pull Wireline Conveyance System from Schlumberger

Schlumberger announced today the launch of the MaxPull high-pull wireline conveyance system that can pull from 18,000 lbf to 30,000 lbf in wells 40,000 ft [12,192 m] deep or more.

TGS, PGS Team Up on Eastern Canada Seismic

TGS announces the expansion of its multi-client library offshore Eastern Canada with plans to acquire more than 36,000 km of 2D seismic data, in partnership with PGS,

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Naval Architecture Navigation Salvage Ship Repair Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | 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: 0.1694 sec (6 req/sec)