USA Coast Guard Documentation: Dimensions

N

n4lbl

.
Oct 7, 2008
307
This is a USA 'centric query. I just bought #2505 and am more that 1,000
miles from it. To put it mildly, taking the measurements for federal
documentation is inconvenient. Does anyone have the numbers easily
available??

thanx,,,
Alan

--
Facts have a well-known liberal bias.[Non-text portions of this message have been removed]
 
J

j.hunter9999

.
Oct 30, 2019
574
This is the latest info that I saved. Hope this helps.

USCG Doc. No.: 1167966
Vessel Service: RECREATIONAL
Trade Indicator: Recreational
Hull Material: FRP (FIBERGLASS)
Hull Number:
Ship Builder: Albin Marin
Year Built:
Hailing Port:
Length (ft.): 27.1
Owner:
Hull Depth (ft.): 7 (3.67 draft)
Hull Breadth (ft.): 8
Gross Tonnage: 6
Net Tonnage: 5

Anyone with better numbers please feel free to correct...I don't recall where I got all of these.

Jack
Bella - V2620
 
C

caesarpaul01

.
Nov 25, 2010
19
I am not a vega owner so correct me if I"m wrong.

The Albin Vega displaces 5,070 lbs, which is the equivalent to its weight. Using the ton as 2240 lbs puts the vega at 2.26 tons.

The gross weight or tonnage of the vega? I cannot tell.

Caesar Paul

From: j.hunter9999 j.hunter9999@...
To: AlbinVega@yahoogroups.com
Sent: Sunday, August 7, 2011 3:07 PM
Subject: [AlbinVega] Re: USA Coast Guard Documentation: Dimensions

This is the latest info that I saved. Hope this helps.

USCG Doc. No.: 1167966
Vessel Service: RECREATIONAL
Trade Indicator: Recreational
Hull Material: FRP (FIBERGLASS)
Hull Number:
Ship Builder: Albin Marin
Year Built:
Hailing Port:
Length (ft.): 27.1
Owner:
Hull Depth (ft.): 7 (3.67 draft)
Hull Breadth (ft.): 8
Gross Tonnage: 6
Net Tonnage: 5

Anyone with better numbers please feel free to correct...I don't recall where I got all of these.

Jack
Bella - V2620
 
S

SVFlyAway

.
Oct 31, 2019
303
Actually tonnage has little do do with the weight of the vessel. It is a
calculation of the volume and thus an estimate of the weight of the goods it
can theoretically carry. Originally documentation was used by the Commerce
Department to allow documented vessels to enter US waters without being
intercepted and inspected. That's what the yacht ensign is all about, to
clearly show the vessel was documented and allowed to pass without
interception (and thus a waste of time and money for the government
official).

I once had a sailboat even shorter than the Vega documented.
 
D

dougpol1

.
Feb 13, 2010
528
A very good friend of mine years ago was the captain of a large cargo
vessel during WW11. Really neat fellow and a real maverick ! Any way he
told me it was originally spelled TUN equaling 100 cubic feet of cargo
space.

Doug
 
T

tiempo2010

.
Sep 24, 2008
346
Documentation tonnage has nothing to do with actual weight/displacement. It
is an archaic measurement of load carrying ability, using casks. Goes back
to jolly old England a hundred or so years ago. The information on how to
arrive at the right number is on the government's documentation site.
 
N

n4lbl

.
Oct 7, 2008
307
Jack:

Thanks very much. The number that I couldn't look up was the hull depth.
BTW if the draft is 3' 10" that becomes 3.8 feet.

The boat you described (by Doc. No.) in the Coast Guard website has:
Hull Number: xxx
Year Built: *
Length (ft.): 27.1
Hull Depth (ft.): 7
Hull Breadth (ft.): 8
Gross Tonnage: 5
Net Tonnage: 5

When I do the arithmetic using LOD = 27.1, beam = 8.1, and hull depth = 7 I
get 5.76 gross tonnes (gads, the spelling!) and 5.19 net tonnes which when
truncated become 5 gross and 5 net too. I used coefficients s = 0.5 and k =
0.75.

Looking up what I believe to be another Vega at the Coast Guard website I
found:
Hull Number: xxx
Year Built: 1972
Length (ft.): 27.1
Hull Depth (ft.): 6
Hull Breadth (ft.): 8
Gross Tonnage: 6
Net Tonnage: 5

More gross tonnes with smaller dimensions? I'm confused. I also may be
making a big deal of nothing.

Many thanks again. I certainly hope that I'm not giving you a hard time
when you are being helpful! I wish I was a little more confident that I
know what I'm doing. I suspect that since the hull depth isn't supposed to
include the coachroof that seven feet is too large. In photos on the hard
the hull above the waterline doesn't seem to be 3/4ths of the draft which
would make seven feet seem reasonable. Six feet isn't sufficient for
documentation unless the deckhouse volume adds enough to reach 5 net. I
hope to avoid the deckhouse measurements.

Note: the Coast Guard files are public data but I felt that I should
de-personalize the data anyway.

Again, I hope I'm not making a big deal of nothing.

Alan
 
C

caesarpaul01

.
Nov 25, 2010
19
I'm glad I responded. The learning never stops with boats; does it?
Caesar Paul

From: Brian Stannard brianstannard@...
To: AlbinVega@yahoogroups.com
Sent: Sunday, August 7, 2011 4:48 PM
Subject: Re: [AlbinVega] Re: USA Coast Guard Documentation: Dimensions

Documentation tonnage has nothing to do with actual weight/displacement. It
is an archaic measurement of load carrying ability, using casks. Goes back
to jolly old England a hundred or so years ago. The information on how to
arrive at the right number is on the government's documentation site.
 
J

j.hunter9999

.
Oct 30, 2019
574
Hi Alan,

No problem providing further insight. I had those specs in a file and can't confirm their validity. As my wife once told me, "Be as anal retentive about the process as you have time to be."

Have fun!

Jack
Bella - V2620
 
N

n4lbl

.
Oct 7, 2008
307
Brian:

Yes, I did use six feet and seven feet in the computations. All I was
saying was that the 3.67 feet draft in the comment ought have been 3.8 which
is closer to 3' 10".

Looking at a photo if the hull above the waterline looks to be about 3/4 the
size of the draft then 7 feet is in the right range. To my eye (I wish I
could measure it!) that doesn't seem right.

When I run the numbers with loa = 27.1, beam = 8.1, and hull depth of 6.8
then the gross = 5.6 and the net = 5.04.

thanx,,,
Alan
 
S

SVFlyAway

.
Oct 31, 2019
303
I went to the CG database for all documented boats and pulled up my boat:
Flyaway (it is about the 5th boat down the list of Flyaways. Attached is a
snapshot of what the CG has in their database. The registration was done
when I transferred the boat ownership by a documentation specialist, so I
assume it is right. Note that my hull number is actually the boat number
since I guess the original boat numbers were covered over during the years
and the state assigned this number as a hull number. I always thought that
strange myself.

Anyway, here is the website for the Documentation Database. Go and check
some of the Vega names off the website to see what others used.

Office of Science and Technology

www.st.nmfs.noaa.gov
 
N

n4lbl

.
Oct 7, 2008
307
Chris:

Slowly, very slowly, I seem to be catching on that I'm making a big deal
that isn't necessary or important.

thanx,,,
Alan
 
T

tim_klynn

.
Feb 12, 2008
337
Alan,
I've got my boat on the trailer in Colorado if you need to measure something. -Tim
________________________________
From: n4lbl alan.schulman@...
To: AlbinVega@yahoogroups.com
Sent: Monday, August 8, 2011 10:39 AM
Subject: Re: [AlbinVega] Re: USA Coast Guard Documentation: Dimensions
Brian:

Yes, I did use six feet and seven feet in the computations. All I was
saying was that the 3.67 feet draft in the comment ought have been 3.8 which
is closer to 3' 10".

Looking at a photo if the hull above the waterline looks to be about 3/4 the
size of the draft then 7 feet is in the right range. To my eye (I wish I
could measure it!) that doesn't seem right.

When I run the numbers with loa = 27.1, beam = 8.1, and hull depth of 6.8
then the gross = 5.6 and the net = 5.04.

thanx,,,
Alan
 
D

dougpol1

.
Feb 13, 2010
528
I don't remember absolutely fort sure bat as I remember. I had no
measurements. Seems to me the application takes you to the measurements
on line and you just copy them and they equal 5tons writ in the info and
that is it.
This was the winter befor last so it's likely the same.

Doug
 
S

SVFlyAway

.
Oct 31, 2019
303
Wow, last night I was complaining to my wife that I live 15 miles from the
boat. I have friends on Lake Washington who have their boat tied up right at
their backdoor. I am envious, until I hear their property taxes are upwards
of $20K a year. I guess 15 miles doesn't look all that bad after all.
 
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