Mobdock Facilitates Onsite Underwater Ship Repair

MarineLink.com
Tuesday, May 21, 2013

In February, Hydrex diver/technician teams carried out underwater stern tube seal repairs on a 139-meter container vessel in Port Everglades, Fla., close to the company’s office in Clearwater. The vessel was suffering from an oil leak, making a fast repair necessary. Using one of the company’s next generation flexible mobdocks the team was able to carry out the entire operation onsite and underwater, saving time and money for the owners.

Hydrex said it constantly invests in the research necessary to continue to evolve repair techniques and procedures. Over the years the Hydrex R&D department has constantly improved the flexible mobdock (mobile mini drydock) technique to make it possible for Hydrex diver/technicians to perform permanent repairs on seals, thrusters and almost any other part of the underwater vessel without the vessel needing to go to drydock.

Hydrex said its latest generation of flexible mobdocks allows it to carry out the replacement of virtually any type of stern tube seals very quickly onsite.

These flexible mobdocks are stored at the fast response centers. Designed specifically to increase speed of service, these centers are equipped with all the latest facilities, lightweight equipment and tools. This allowed us to mobilize a team together with all the needed equipment to the container vessel’s location within the shortest possible time frame.

After the diving team had set up a monitoring station, the operation started with a thorough underwater inspection of the stern tube seal assembly. The divers then removed the rope guard of the vessel as well as the fishing lines tangled around the liner that had caused the oil leak.

Next the team installed the flexible mobdock around the stern tube seal assembly creating a dry underwater environment for the divers to work in drydock-like conditions, a necessity for permanent stern tube seal repairs. After cleaning the entire assembly, the divers disconnected the split ring and brought it to the surface. Next the team removed the three damaged seals one by one and replaced them with new ones. Because the existing running area was completely worn down, the diver/technicians also installed a spacer ring to create a new running area for the seals.

The operation ended with the conducting of a pressure test with positive results, the removal of the flexible mobdock and the reinstallation of the rope guard.

By creating a dry environment underwater, the divers were able to rapidly complete the required work onsite. The teams worked in shifts to perform the stern tube seal repairs within the shortest possible time frame. The in-situ repair saved the owner the time and money which going to drydock would have entailed.

www.hydrex.be
 

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

Technology

Decade Old India Shipping Summit Makes History

In ten years, India Shipping Summit held consistently in Mumbai, has sailed on a robust growth course despite the worldwide witnessing recessionary waves buffeting any endeavors to grow and gain.

Ezra Bags $70m in Offshore Contracts

Ezra Holdings Limited, a leading contractor and provider of integrated offshore solutions to the oil and gas industry, today announced that the Group’s Subsea Services division,

Clean Marine Wins New Contract

Clean Marine has been selected by Hyundai Mipo Dockyard in South Korea to supply exhaust gas cleaning systems (EGCS) for two new MR tankers. IMO’s convention

Ship Repair & Conversion

Moore Stephens Expects Vessel Operating Cost to Rise

Vessel operating costs are expected to rise by almost three per cent in both 2014 and 2015, according to a new survey by international accountant and shipping consultant Moore Stephens.

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,

Mitsubishi Super Skiving System

Mitsubishi Heavy Industries, Ltd. (MHI) has completed development of the "Mitsubishi Super Skiving System" for machining internal gears with high speed and outstanding precision.

 
 
Maritime Contracts Maritime Standards Naval Architecture Navigation Pipelines Salvage Ship Electronics 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: 0.1476 sec (7 req/sec)