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Re: Ocean transport

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Ships are different and the seaway is different (little boat in a big sea is
a problem).  This won't be in a book necessarily.  I assume your worried
about accelerations (heave, pitch, roll, etc) on a structure.  Those are
things that will come from the anticipated seaway (route planning and ocean
conditions) and the particular vessel's response.

The lashing of the cargo package is usually the responsibility of the
shipping company.  If your in a container and you pack it its your problem.
Shippers are usually first concerned with the cargo moving during transport
and causing stability problems.


-----Original Message-----
From: Bohm, Gabriel <GBohm(--nospam--at)>
To: 'seaint(--nospam--at)' <seaint(--nospam--at)>
Cc: Riddick, Gene <GRiddick(--nospam--at)>
Date: Friday, October 16, 1998 10:25 AM
Subject: Ocean transport

>Imagine a steel structure supporting heavy equipment, lots of piping,
>platforms, etc, fully pre-assembled, placed on the deck of a ship and
>sent from one continent to another. A few questions come to mind:
>How do you quantify ocean sway loads? Is there a textbook on this topic?
>Any articles?
>How's the structure secured to the deck? If the actual securing scheme
>is not known during the design stage (which means unknown boundary
>conditions), how can the structure be checked?
>Who bears ultimate responsibility when things go wrong?
>Your feedback will be much appreciated.
>Gabe Bohm
>San Dimas, Ca.