Displacement - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest > General Discussion (sailing related)
 Not a Member? 


Reply
 
LinkBack Thread Tools
  #1  
Old 12-17-2002
Junior Member
 
Join Date: Sep 2001
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
LeLai201 is on a distinguished road
Displacement

How is a boat''s displacement computed? If a boat has a gross tonnage of 24,000 lbs, is its displacement the same, or is there an equation to derive a different figure?
Reply With Quote Share with Facebook
  #2  
Old 12-17-2002
Senior Member
 
Join Date: Dec 2001
Posts: 360
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 13
928frenzy is on a distinguished road
Displacement

The displacement has to at least equal the overall weight of the boat - or it will sink.

~ Happy sails to you ~ _/) ~
Reply With Quote Share with Facebook
  #3  
Old 12-17-2002
pirateofcapeann's Avatar
Senior Member
 
Join Date: Aug 2002
Location: Gloucester, Mass. USA
Posts: 373
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 13
pirateofcapeann is on a distinguished road
Displacement

When a boat is floating, it displaces an amount of water which weights exactly equal to the weight of the boat. Hence the term: Displacement.

As far as Gross Tonnage, that figure would reference the displacement of the vessel AND the weight of the cargo the vessel can carry. That figure is used in documenting a vessel.

For more information on that aspect, check out: www.uscg.mil/hq/g-m/vdoc/nvdc.htm
Reply With Quote Share with Facebook
  #4  
Old 12-17-2002
paulk's Avatar
Senior Member
 
Join Date: Jun 2000
Location: CT/ Long Island Sound
Posts: 2,533
Thanks: 4
Thanked 20 Times in 19 Posts
Rep Power: 15
paulk is on a distinguished road
Displacement

It must be theoretically possible to calculate the displacement of a boat - naval architects do it all the time. The result can be numbers that are quite different from what the boat actually ends up weighing. Maybe the NA forgot to include a figure for full tanks. Maybe he left off 500 feet of chain. On bigger boats, stuff like this may make a difference of a half inch in the floating lines - no big deal. On smaller boats it can make a bigger difference, and they may go back and revise the printed numbers they publicize after they actually get a sample one to weigh.
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
boat check - to Jeff H and others maiden Boat Review and Purchase Forum 21 12-05-2006 02:55 AM
perfect cruiser for under $250k? pdshipl Boat Review and Purchase Forum 4 04-01-2004 04:15 AM
Displacement vs Length TADIAS General Discussion (sailing related) 5 12-16-2003 06:54 AM
Input from Cruisers please. Speedy50 Cruising & Liveaboard Forum 13 10-16-2003 01:12 PM
Purchasing through Charter Programs jillskor Boat Review and Purchase Forum 13 09-09-2001 07:30 AM


All times are GMT -4. The time now is 08:36 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.