Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors
  #1  
Old 07-12-2011, 06:03 AM
nick_m nick_m is offline
 
Join Date: Feb 2011
Rep: 10 Posts: 3
Location: UK
LCF Calculation

Hi everybody

I am looking for a semi-empirical for the calculation of LCF position of merchant vessels (bulkers, tankers etc), Any idea ????

Many thanks
Reply With Quote
  #2  
Old 07-12-2011, 01:37 PM
Tim B Tim B is offline
Senior Member
 
Join Date: Jan 2003
Rep: 841 Posts: 1,438
Location: Southern England
LCF is just the centroid of the waterplane area, and on that sort of hullform it's not a complex shape. You can approximate it reasonably with 3 or four trapezia. You should be able to reduce the full set of equations to a single line.

Tim B.
__________________
Open Source Marine Charting - openpilot.sourceforge.net
Open Source Vessel Dynamics opendynamics.engineering.selfip.org
Reply With Quote
  #3  
Old 07-12-2011, 05:21 PM
nick_m nick_m is offline
 
Join Date: Feb 2011
Rep: 10 Posts: 3
Location: UK
The problem is that i am constructing a prog, where it calculates several things, I assume that the user knows only some basic ship particulars L, B, T, D, Cb etc,

Many thanks for your reply
Reply With Quote
  #4  
Old 07-12-2011, 07:24 PM
ldigas's Avatar
ldigas ldigas is offline
Senior Member
 
Join Date: Feb 2011
Rep: 60 Posts: 187
Location: Zagreb, Croatia
It is not unusual to ask for LCF in input data (for example, as a percentage of some particular length).
Reply With Quote
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Lcf hbomb8 Stability 1 03-15-2011
01:27 PM 
Lcb / Lcf SuperPiper Sailboats 18 03-05-2011
08:50 PM 
LCB vs. LCF BTScow Stability 2 09-23-2010
07:14 AM 
Resistance calculation and propulsion calculation for tug boat sreejith Props 0 02-06-2010
04:43 AM 
LCF Position Millrtme Boat Design 0 01-31-2008
11:24 PM 

Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.

All times are GMT -4. The time now is 06:15 AM.


Powered by: vBulletin Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2015 Boat Design Net