04-23-2007, 09:44 PM
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#1 |
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I just got squirted with ballyhoo poop
Join Date: Feb 2007
Location: Virginia Beach
Posts: 41
Credits: 4,758.2
Occupation: Merchant mariner & charter captain
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Formula to approximate fish weight
Thought I would post this for all to see. It works as an estimate on most fish.
length x girth squared divided by 800 = approximate weight example....new N.C. blackfin tuna state record length....38 inches girth......29 inches 38 x 841=31958 divided by 800 = 39.9475 The new state record weighed 40 pounds even. Pretty damn close. Dave
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04-25-2007, 10:30 AM
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#2 |
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Cockpit Monkey In Training
Join Date: Feb 2007
Location: Charleston, SC
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Occupation: Athletics, Education
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is this formula as accurate on other species? or mainly tuna?
i see you stated "most fish" just wanted a quick clarification thanks |
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04-25-2007, 01:52 PM
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#3 |
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killing stuff cause it feels good
Join Date: Apr 2005
Location: OCMD
Posts: 1,611
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Remember on bills that it is lower jaw fork length.
It works ok. The girth measurement needs to be accurate. In my experience long skinny fish, and short fat fish mess it up.
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Franky Pettolina Marine Surveyor and Consultant SAMS~AMS--ABYC Standards Accredited--Chapman Grad 410-251-0575 surveyfp@yahoo.com www.lastcallcharters.com |
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04-25-2007, 02:51 PM
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#4 |
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I think Admin is going to let me have this space
Join Date: Aug 2006
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As Franky said accurate on most fish accept long skinny fish will throw it off bad. Was pretty close on a blue one we killed a few years ago weighed 534.5 chart was 540.77 lbs.
length 109 inches girth 63 inches 109 x 3969 =432621 divided by 800 =540.77625
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don't be scared of reverse  
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04-25-2007, 07:37 PM
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#5 |
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I just got squirted with ballyhoo poop
Join Date: Feb 2007
Location: Virginia Beach
Posts: 41
Credits: 4,758.2
Occupation: Merchant mariner & charter captain
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Most fish, I was thinking about Flounder???????
I think this is mostly for tuna and marlin. Its not an exact science, but good to know. Dave
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www.unreelsportfishing.net Last edited by UNREEL; 04-25-2007 at 07:43 PM. |
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