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 Today


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

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

Marine Propulsion

Seaspan Venture: Like for Like

“We don’t usually remove the heads at mid-life on the Cummins engines,” Randy Beckler, Shore Engineer for Seaspan Marine, explained in reference to the 2003 launched

SevenCs Supports MariGreen Project

SevenCs is part of the EU INTERREG V A cross-border project “MariGreen” to support the maritime industry in the transition towards more efficient, greener and more sustainable shipping.

Australian Navy Commissions HMAS Adelaide

Royal Australian Navy commissions second LHD HMAS Adelaide powered by GE LM2500 marine gas turbines   GE Marine reports that its LM2500 gas turbines now power

Ship Repair & Conversion

Novoship to Install Ecochlor BWTS on 4 Tankers

SCF Novoship Technical Management has selected the Ecochlor Ballast Water Treatment System (BWTS) to be retrofitted on three Aframax Oil Tankers and one Product Carrier.

Seaspan Venture: Like for Like

“We don’t usually remove the heads at mid-life on the Cummins engines,” Randy Beckler, Shore Engineer for Seaspan Marine, explained in reference to the 2003 launched

Demolition Age Drops as the Dry Bulk Market Enters Another Challenging Year

The dry bulk market faced a lot of headwind in 2015 as dwindling demand and over-supply created very unfavourable market conditions, says BIMCO.   2016 has shown

Offshore

ALMACO Wins Statoil Order for 450 Cabins

ALMACO Group was awarded the contract to build 450 NORSOK-compliant Modular Cabins for Statoil’s Johan Sverdrup fixed platform at Apply Leirvik’s yard in Stord, Norway.

Three Dead on Pemex Platform, Fire Under Control

Three workers were killed and at least seven injured when a fire broke out on a Pemex oil processing platform in the Gulf of Mexico, but the latest in a string of incidents is now under control,

Topaz Responder Saves Refugee Migrants

Topaz Energy and Marine has emerged as an unlikely player in the effort to save refugee migrants risking their lives on the sea crossing from Turkey to Greece’s islands in order to reach Europe.

 
 
Maritime Contracts Maritime Security Maritime Standards Navigation Offshore Oil Port Authority Salvage Ship Simulators Shipbuilding / Vessel Construction 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: 0.0825 sec (12 req/sec)