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Forum: Seamanship & Boat Handling

03-11-2010, 08:53

Replies: 31

Cleared by a Foot !

Views: 4,157

Posted By David M

In doing stability and trim calculations, the...

In doing stability and trim calculations, the margin of error in calculating draft is more like an inch or two. If you can read a draft mark at the bow and stern, you can nail it down to that.

A...

Forum: Seamanship & Boat Handling

02-11-2010, 11:14

Replies: 31

Cleared by a Foot !

Views: 4,157

Posted By David M

Large bridges though change in height with...

Large bridges though change in height with respect to the Earth, depending on air temperature and traffic.

Forum: Seamanship & Boat Handling

02-11-2010, 07:35

Replies: 31

Cleared by a Foot !

Views: 4,157

Posted By David M

It's more likely the case that the press is not...

It's more likely the case that the press is not quite correct. It's been my experience that most reporters have very little knowledge pertaining to ships or other maritime related matters.

Forum: Seamanship & Boat Handling

01-11-2010, 10:20

Replies: 31

Cleared by a Foot !

Views: 4,157

Posted By David M

Another factor not mentioned is air temperature. ...

Another factor not mentioned is air temperature. Bridges sag more in higher temperatures. The amount of traffic is another factor.

In looking at the picture, it looks like the clearance was much...

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