Using the simplified measurement for my vessel I got five tons
which is about double the displacement.

S.Simon

"Jeff Morris" wrote in message ...
The Simplified Measurement system described in my link (and BB's) is optional and rather
generous. I believe it yields numbers much higher than what would be determined by a more
formal, traditional measurement.

It essentially takes half the volume of a box that includes the deck down to the keel.
You can argue about camber, but the simplified measurement probably doubles the
appropriate number for your "vessel".


"Simple Simon" wrote in message
...


The definition is incorrect. It does not account for
deck camber for one thing. It cannot measure the
internal volume correctly.

S.Simon


"Jeff Morris" wrote in message
...
I repeat, here's the official definition of "depth":

DEPTH (D) is the vertical distance taken at or near amidships from a line drawn
horizontally through the uppermost edges of the skin (outside planking or plating) at
the
sides of the hull (excluding the cap rail, trunks, cabins and deckhouses, and deck
caps)
to the outboard face of the bottom skin of the hull, excluding the keel.

What part of "excluding the cap rail, trunks, cabins, and deckhouses" is unclear to
you?

"Simple Simon" wrote in message
...
That doesn't change the definition of depth.

The measure of depth is as I stated above and it includes
the house or raised deck or a yacht. I ragged on Booby
for having the incorrect depth listed on the documentation.

It is still incorrect on the documentation.


S.Simon


wrote in message
...
On Thu, 13 Nov 2003 18:17:08 -0500, "Jeff Morris"
wrote:

A fair explanation, but your first several posts on the topic indicated you did
not
understand the measurement. It was only after I posted the link to the
measurement
that
you started to get it close to right.

Modern measurement of tonnage does not generally measure to the coachroof, it
only
goes up
to the deck. Thus, a vessel with full headroom might only be listed at 5 feet.
My
old
Nonsuch, with generous headroom ( 6.5 feet ?) is listed as having a 5.6 foot
Depth.


Here is all that matters when measuring for purpose of documentation, including
diagrams for the terminally stupid, who don't have a good grasp of English.

http://www.uscg.mil/hq/msc/T3/SIMP_formula_infosht.pdf

What anybody "thinks" doesn't count. This is what the ruling authority says you
MUST do to comply with the law.

BB