|
California Maritime Academy
A California State University of Engineering, Business and Transportation Studies. Offers undergraduate degrees and continuing education. Careers in maritime and engineering industries are available. Officer commissioning in the military also.
USA California
CEDA - Central Dredging Association
CEDA, an independent, non-profit, non-governmental, professional society, aims to provide a forum for all those involved with any kind of activity related to dredging and marine construction and who live or work in Europe, Africa or the Middle-East.
Netherlands
Society of International Gas Tanker and Terminal Operators'
The Society is a non-profit making organisation, formed to promote high operating standards and best practices in gas carriers and terminals world-wide. It provides technical advice and support for Members and represents their common interests.
United Kingdom
|
|
 |
 |
|
|
|
|
Member: temana |
Post Date: 7/12/2004 |
My query sounds quite simplistic - are ships rudders positively bouyant?, ie do they sink - or will they float. Are their different designs? The question comes about as we were discussing a theoretical in-water rudder repair. Many thanks in advance for any helpful responses.
|
|
Reply
| Email
|
Edit/Delete |
|
Member: Graham |
Post Date: 2/2/2005 |
Steel rudders for merchant ships are normally sealed watertight and the interior coated with oil or other anti-corrosive. However because the rudder is usually of heavy construction often with castings as part of design and lapped plates slot welded for closing plates, I doubt that the buoyancy of the rudder would be sufficient to ensure the rudder floated. Also in a practical sense many rudders that are built watertight end up with cracks as a result of the high vibration expereienced when operating behind the propeller so in reality have in service leaked and filled with water. I certainly would not rely upon rudder buoyancy when undertaking a repair. Any instances I have heard of where, say, a rudder stock has broken the rudder has ended up on the seabed and often impossible to locate or retrieve.
|
|
Reply
| Email
|
Edit/Delete |
|
Member: temana |
Post Date: 2/2/2005 |
Thanks Grahame, I eventually came to the same conclusion. The rudder repair went well, with all parties happy.
|
|
Reply
| Email
|
Edit/Delete |
You may also like:Trending Technology, World Shipping & Maritime News |
|
|
|
Advanced Marine Materials & Coatings
Hot Tap Technology
Hellenic Navy Frigates Automation Upgrade