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

Marine Propulsion

Maritime Reporter @ 75: The Daily Cartoon

Maritime Reporter & Engineering News was founded by John J. O'Malley (1905-1980) in 1939, and today ranks as the world's largest audited trade publication in the world serving the maritime industry,

Doosan Delivers a ‘World’s First’ to NASSCO

Doosan Engine has confirmed delivery of the world’s first dual-fuel, low-speed ME-GI engine to the American National Steel and Shipbuilding Company (NASSCO) shipyard in San Diego, USA.

Elco Launches Electric Outboard Motor Line

Expansion into outboard category brings benefits of electric propulsion to even more boaters Elco Motor Yachts, a company in electric and hybrid marine propulsion for more than 120 years,

Ship Repair & Conversion

Permanent On-site Collision Damage Repair in Greece

In July Hydrex mobilized a team of diver/technicians to Syros, Greece, for a complex repair operation on a 118-meter, 8550 DWT chemical tanker. The vessel had suffered

Pipeline Corrosion Shutters Statoil's Troll C Platform

Norway's Statoil shut oil and gas production at its Troll C platform in the North Sea after inspections found corrosion damage on a pipeline, the company said in

Maritime Reporter @ 75: The Daily Cartoon

Maritime Reporter & Engineering News was founded by John J. O'Malley (1905-1980) in 1939, and today ranks as the world's largest audited trade publication in the world serving the maritime industry,

Container Ships

Containership Cleared of Ebola Risk

Containership Hammonia Pacificum has been cleared of Ebola risk at the Port of Ricahrd Bay after being stopped previously at several West African ports, according

VSTEP Delivers FMB Simulator to Danaos

Danaos Corporation purchased a NAUTIS DNV Class A FMB Simulator and Instructor Station for training of its fleet members.  The simulator will be delivered and installed

Doosan Delivers a ‘World’s First’ to NASSCO

Doosan Engine has confirmed delivery of the world’s first dual-fuel, low-speed ME-GI engine to the American National Steel and Shipbuilding Company (NASSCO) shipyard in San Diego, USA.

Marine Equipment

Two MacGregor Subsea Cranes Ordered for Chinese PSVs

MacGregor, part of Cargotec, has secured a new contract from Chinese shipbuilder, Fujian Mawei Shipbuilding Ltd., for two 100-metric-ton active heave-compensated subsea MacGregor cranes.

Motion Compensation Aids Offshore Lifeboat Lift

In a refurbishment program to upgrade lifeboats on offshore platforms, Ampelmann completed a second successful reinstallation using its full motion compensation technology.

VSTEP Delivers FMB Simulator to Danaos

Danaos Corporation purchased a NAUTIS DNV Class A FMB Simulator and Instructor Station for training of its fleet members.  The simulator will be delivered and installed

Vessels

Containership Cleared of Ebola Risk

Containership Hammonia Pacificum has been cleared of Ebola risk at the Port of Ricahrd Bay after being stopped previously at several West African ports, according

Tanker Carrying Kurdish Oil Reappears Unladen off Israel

A tanker carrying crude oil from Iraqi Kurdistan reappeared unladen on Aug. 19 about 30 kilometres off the coast of Israel, ship tracking data on Reuters showed.

First Two Mooring Boats Launched for Port of Ras Laffan

Nakilat has celebrated the delivery of two 16-meter mooring boats built by shipbuilder Nakilat Damen Shipyards Qatar for towage operator Nakilat Svitzer Wijsmuller.

Underwater Engineering

Permanent On-site Collision Damage Repair in Greece

In July Hydrex mobilized a team of diver/technicians to Syros, Greece, for a complex repair operation on a 118-meter, 8550 DWT chemical tanker. The vessel had suffered

Maersk Drilling Rig Team Train Local Talent

Maersk Drilling says that its 'Mærsk Deliverer' rig team has initiated seven local acceleration programmes in Angola. The goal is to train and develop local talent

Mærsk Putting Valuable Experience to Good Use

The Mærsk Deliverer rig team has initiated seven local acceleration programmes in Angola. The goal is to train and develop local talent to take on increasingly

 
 
Maritime Careers / Shipboard Positions Maritime Security Maritime Standards Navigation Pod Propulsion Port Authority Salvage Ship Electronics Ship Simulators Shipbuilding / Vessel Construction
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: 0.1471 sec (7 req/sec)