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

Marine Propulsion

PIRIOU Delivers 53-meter FSIV

French boat builder PIRIOU has delivered the 11th of its 53- by 10-meter Fast Supply and Intervention Vessels (FSIV) to Suisse Outremer AG, to be operated by ABC Maritime AG.

Becker Marine Delivers Rudder for Largest Containership

Becker Marine Systems delivers rudder for the largest container ship in the world   At 19,000 TEU, the largest container ship in the world is now picking up speed

GE Gas Turbine Powers Australia’s Largest Warship

GE Marine’s LM2500 aeroderivative marine gas turbine now powers the Royal Australian Navy’s (RAN) recently commissioned HMAS Canberra Landing Helicopter Dock (LHD) ship,

Ship Repair & Conversion

NASSCO Opens Bremerton Repair Facility

General Dynamics NASSCO celebrated the grand opening of its new location in Bremerton, Wash., yesterday. The facility will support the company’s recently-awarded contract to repair and maintain U.

NASSCO Opens New Facility for Naval Repair

General Dynamics NASSCO opened a new location yesterday in Bremerton, Wash. to support the company’s recently-awarded contract to repair and maintain U.S. Navy

FPSO Trio Receives Side Shell Protection

SPS Overlay has yet again been used for side impact protection on three FPSOs for a major player in the offshore industry. The work was carried out at Enseada do Paraguaçu S.

Offshore

Jackup Rig Delivered to Abu Dhabi’s NDC

Lamprell delivers its 11th Super 116E jackup drilling unit Lamprell has completed the construction of jackup drilling rig, the Shuwehat, and has delivered the

Shell Resuming Nigeria EA Oil Production

Royal Dutch Shell said on Thursday it had resumed production of Nigerian EA crude oil and lifted its force majeure on the grade after completing repairs to a mooring platform.

EU Bans Crimea Investment, Targets Oil, Cruise Sectors

Measures take effect on Saturday; aim is to keep pressure on Russia over Ukraine. The European Union banned investment in Crimea on Thursday, halting European

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Standards Navigation Offshore Oil Pipelines Pod Propulsion Salvage 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: 0.1600 sec (6 req/sec)