# GZ characteristic curve on a model vessel - Help!

Discussion in 'Education' started by mallia.s, Mar 11, 2010.

1. Joined: Sep 2009
Posts: 25
Likes: 0, Points: 0, Legacy Rep: 10
Location: Malta - Europe

### mallia.sJunior Member

HI all,

I am working on a project and am required to extract the GZ curve of a model replica of an existing fishing boat

The real boat weighs 2600kg, displaces 2.54m^3 water, length 6.7m (salt water - 1025kg/m3)

The replica is 1:14 scale - measuring 0.479m. (fresh water - 1000kg/m3)

How should I calculate the displacement of the replica? [If you had to divide the mass by 14, it results in 185kg! ... not very realistic I suppose!] Do I need to divide something qubed (^3)?

steve

2. Joined: Feb 2010
Posts: 10
Likes: 1, Points: 0, Legacy Rep: 10
Location: Annapolis

### froudedudeJunior Member

do you have lines or a point cloud for this boat. GZ will be a function of volume, as you need the center of bouyance

3. Joined: Feb 2004
Posts: 24
Likes: 1, Points: 0, Legacy Rep: 17
Location: Redmond, WA

Mallia.s