Underwater Bow Thruster Reinstallation

MarineLink.com
Tuesday, July 23, 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 Reporter April 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Marine Propulsion

ExxonMobil Debuts Premium AFME 200

To help shipowners meet strict new emission mandates, ExxonMobil expanded its range of fuels for use within Emission Control Areas (ECA) with the introduction of

ABB's New Azipod Thruster

ABB has released details on its latest generation Azipod thruster, a unit which ranges in power from 1.6 megawatts to 7 megawatts (MW) and is intended to serve a growing electric propulsion market.

EPA Promotes Green Initiatives at Port of Houston

U.S. Environmental Protection Agency (EPA) Administrator Gina McCarthy visited the Port of Houston April 24 to highlight grants aimed at improving air quality. The port will receive about $900,

Ship Repair & Conversion

BV Upgrades RAM Software

To help offshore operators and contractors get more out of their assets and develop projects more cost-effectively, Bureau Veritas has supercharged its reliability,

Hospital Ship Up to Speed with AMOS

SpecTec will work with Mercy Ships to migrate its current system Business Suite to AMOS Enterprise Management Suite (EMS). Mercy Ships’ Africa Mercy, the world’s largest hospital ship,

Ecochlor BWTS

Ballast water treatment technology developer Ecochlor Inc. presented a project case study at CMA Shipping 2015, a case study which covered the retrofit of Ecochlor’s

Container Ships

Bollore Consortium Misses out on Cameroon's Kribi Port Shortlist

A consortium led by France's Bollore failed to make the final shortlist of firms vying to manage a new container terminal in Cameroon's southern port of Kribi,

Long Beach Picketers Not Striking -Port CEO

Port of Long Beach CEO Jon Slangerup issued a statement addressing the status of picketing truckers at the harbor, pointing out that the demonstration is not a strike.

Truckers to Strike Four SoCal Shippers

Truckers who haul freight from the ports of Los Angeles and Long Beach will go on strike against four ground-shipment companies on Monday, a Teamsters union official said,

Marine Equipment

ABB's New Azipod Thruster

ABB has released details on its latest generation Azipod thruster, a unit which ranges in power from 1.6 megawatts to 7 megawatts (MW) and is intended to serve a growing electric propulsion market.

Ecochlor BWTS

Ballast water treatment technology developer Ecochlor Inc. presented a project case study at CMA Shipping 2015, a case study which covered the retrofit of Ecochlor’s

GEA UV Ballast Water Treatment

Earlier this year GEA won the first contract for equipping cruise liners with its UV ballast water treatment system, BallastMaster marineX, powered by Trojan Marinex.

Vessels

BHGI-designed ATB Unit Under Construction

Bristol Harbor Group, Inc. (BHGI) informs it is currently completing the detail design phase of a 399’ x 74’ x 30’ 80,000 BBL double hull oil tank barge and a 120’

Scorpio Bulkers Sells Three Newbuilds for $111m

Scorpio Bulkers Inc. announced that it has entered into agreements to sell three newbuild dry bulk vessels, including two Capesize ships and an Ultramax ship, for

Horizon Delivers Second 80’ Towboat to FMT

Horizon Shipbuilding, Inc. announced the delivery of another 80’ Inland River Towboat, the M/V Chip Stiebing, to Florida Marine Transporters (FMT) of Mandeville, La.

Underwater Engineering

Royal IHC Congratulates the King in a Special Way

Royal IHC is very honored to be part of the program on the King’s Birthday. Among other activities, the King and his family will be viewing a ‘Grande Maritime Parade’ in Dordrecht.

MMT Presents Surveyor Interceptor ROV (SROV)

At Ocean Business in Southampton  MMT´s key topic was the new Surveyor Interceptor ROV (SROV). Together with its Norwegian partners Reach Subsea AS, MMT developed a new generation,

Salvage and Wreck Removal Conference

HINODE Events and Services Pvt Ltd., have announced the 4th Annual Conference on Salvage and Wreck Removal in India to be held on Wednesday, July 8, 2015 at Visakhapatnam on India's East Coast.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Standards Offshore Oil Pod Propulsion Salvage Ship Electronics Ship Simulators Shipbuilding / Vessel Construction Sonar
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: 0.1739 sec (6 req/sec)