Permanent Underwater Rudder Repair in Antwerp

MarineLink.com
Tuesday, May 07, 2013

At the beginning of March, a Hydrex team of diver/technicians sailed out with one of the company’s dive support workboats to a 200-meter vehicle carrier berthed in the port of Antwerp. They performed an underwater inspection and repair of the vessel’s malfunctioning rudder.

The latest development allows Hydrex to perform permanent repairs on any type of rudder while the vessel remains at anchorage and cargo operations continue. Permanent in-water rudder repairs were hitherto not possible and ships had to drydock in cases where a major defect was found. The newly-designed method can be mobilized within hours to any port in the world. This allows Hydrex to offer the new service on a worldwide basis.

Major defects on rudders very often cause unscheduled drydocking of ships. The new technique designed by the Hydrex technical department allows engineers, welders and inspectors to perform their tasks in dry conditions with the vessel still afloat.  Class approved permanent repairs on-site are now possible while commercial operations continue. Steel repairs and replacements can be performed and pintle and bushing defects can be solved without the loss of time and money associated with drydocking.

Hydrex was contacted by the owners of the vehicle carrier because the rudder was not working properly. A diver/technician team therefore mobilized from the company’s headquarters with one of the Hydrex workboats which was loaded with all the needed equipment.

After arriving at the ship’s location in Antwerp, the team carried out a detailed underwater inspection. This revealed several irregularities on the seal assembly of the rudder.

The new method allowed the divers to perform further inspections and make a detailed assessment of the situation of the rudder in drydock-like conditions.

The rudder specialist that was present observed several reasons for the malfunctioning of the rudder. The drive band which is mounted around the seal ring was not secured, the two rings which lock the seal were too large in diameter and finally the rings were not greased.

Following the inspection by the rudder specialist, the Hydrex team carried out several repairs to remedy the rudder problems. First the existing rudder seal was tightened. Next the two wrong-sized rings were replaced with correct ones and both the upper and lower casing of the rudder seal assembly were reinstalled. Next the diver/technicians pumped grease into the rudder seal room and secured all nuts and bolts. The team could then dismantle the equipment and finalize the operations.

The vessel could continue its schedule with a fully functioning rudder. By carrying out the inspection and repair on-site and underwater, Hydrex allowed the owner to keep his ship out of drydock, saving him time and money

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

Marine Propulsion

John Deere Expands Tier 3 Engine Line

John Deere Power Systems (JDPS) has introduced new propulsion ratings to its EPAMarine Tier 3 engine offerings. The new PowerTech 4045TFM85 propulsion ratings expand

Caterpillar: Q3 Results Show Improvement

Caterpillar Inc. today announced its third-quarter results, in which it reported profit per share of $1.63 for the third quarter of 2014, an increase from third-quarter 2013 profit per share of $1.

ABB: Remote Monitoring Link to Fuel Efficiency

Anticipating the maintenance of equipment on board ships in order to increase fuel efficiency could be a “real game changer in the future,” said Andreas Zito, chief technical officer of the V.

Ship Repair & Conversion

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.

Messer to Debut MetalMaster Xcel

Messer Cutting Systems said it has answered the call from manufacturers that have been demanding a faster, more accurate way of producing cut parts. Messer’s

Offshore

Three Dead in Offshore Platform Accident

Three workers were killed and one is still missing after an accident at one of the offshore oil and gas platforms in the Caspian Sea in Azerbaijan, Azeri state energy company SOCAR said on Thursday.

Ocean Installer Enters Australian O&G Market

Ocean Installer’s said that it has established office in Perth, Australia to meet demand for subsea construction services.  “This is the beginning of our presence

Nordic Wins with Noble

Nordic Maritime, a leading offshore service operator, today announced a five year time charter for its DP2 IMR Subsea vessel, Mokul Nordic, which has been awarded by Noble Energy,

 
 
Maritime Careers / Shipboard Positions Maritime Standards Navigation Pod Propulsion Port Authority Ship Repair Ship Simulators 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: 0.1240 sec (8 req/sec)