Wärtsilä Offers Stern Tube Seal Repair

MaritimePropulsion.com
Tuesday, June 25, 2013

Stern tube seals, mounted between the propeller and the stern tube, are vulnerable to damage due to the hazards present in the subsea environment. Operating with a damaged seal risks environmental pollution and failure of the stern tube bearings, either of which can result in a vessel being unable to sail, costing the owner time and money.

Failure may occur when a stern tube seal is compromised by a foreign object such as fishing line or by environmental abrasion. When this happens, the seal must be repaired or replaced before the ship can sail again. Such incidents often occur when the vessel is far from its home maintenance port.

When damage occurs, a ship operator needs a seals and bearings partner who can manage and fix their problem quickly. A partner with expert supply chain management can offer shorter lead times for stern tube seal repair or replacement. In other words, the partner is able to engineer a seal for the customer’s need; then manufacture, deliver and install it – all within a few days’ notice, around the world.

Stern tube seals can even be repaired underwater, which is sometimes a smart alternative to dry-docking an offshore vessel, which can cost tens of thousands of dollars per day. Underwater servicing means that a team of diving engineers conduct the repair either in open water or in a de-watered hyperbaric chamber. Working in the hyperbaric chamber resembles working conditions in a normal dry dock. The vessel needs only to be secured at a location where sea conditions allow for safe underwater repair.

According to Wärtsilä, its seal engineers react within minutes when a customer reports a problem. Chris Rowlands, Director, Wärtsilä Seals & Bearings PC Sweden, commented, “We design a seal that suits the customer’s vessel by using 3D parametric CAD tools to reduce the risk of error. Next, the main components are cast by our in-house foundry and machined using our state-of-the-art CNC machine tools. Finally, the finished seal is assembled and tested. In most cases, this stage is performed by the engineers who will actually install the seal on the customer’s vessel, helping to ensure the highest quality.”

Wärtsilä Sternguard SeaQual seals are designed for long life running in demanding operating conditions, the manufacturer said. They are fully-split, meaning that they can be fitted without costly and time-consuming propeller shaft withdrawal. Additionally, Wärtsilä Sternguard SeaQual seals are shorter in length than other seals, meaning that they can be easily retrofitted.

www.wartsila.com
 

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

Marine Propulsion

Rolls-Royce Holdings' Voting Rights and Capital

In accordance with DTR 5.6.1 of the FCA's Disclosure and Transparency Rules (DTR), the Company is required to notify the market of its total number of voting

BCG Releases PCVM Emulation

Buffalo Computer Graphics (BCG) Inc. announced the addition of another emulation product to its family of Radar Simulators. BCG has completed an emulation of the VisionMaster FT radar – our PCVM.

Daihatsu Joins ClassNK Research Project

Classification society ClassNK announced that it will embark on a joint research project together with Daihatsu Diesel Mfg. Co., Ltd. Through the partnership, ClassNK

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,

MN 100: Horizon Shipbuilding, Inc.

13980 Shell Belt Road Bayou La Batre, AL 36509 E-mail: trshort@horizonshipbuilding.com Website: www.horizonshipbuilding.com President and General Manager: Travis R.

Ecospeed Fuel and Cost Saving Solutions at SMM

Ecospeed announced it will exhibit its line of fuel and cost saving solutions at SMM in Hamburg. Ecospeed and fuel savings Routine in-water cleaning results

Marine Power

BCG Releases PCVM Emulation

Buffalo Computer Graphics (BCG) Inc. announced the addition of another emulation product to its family of Radar Simulators. BCG has completed an emulation of the VisionMaster FT radar – our PCVM.

BMT WBM to Showcase TUFLOW at World Bank Seminar

BMT WBM ( (BMT), a subsidiary of BMT Group Ltd, a leading international engineering and risk management consultancy, is delighted to announce that it will be presenting

Daihatsu Joins ClassNK Research Project

Classification society ClassNK announced that it will embark on a joint research project together with Daihatsu Diesel Mfg. Co., Ltd. Through the partnership, ClassNK

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Maritime Standards Pod Propulsion Port Authority Salvage Ship Electronics Ship Repair 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: 0.1613 sec (6 req/sec)