420: Gross Tonnage of Lagoon 420

[brianontheroad]

I'm filling out my USCG captains license paperwork, I spent 40 + days on a lagoon 42 a few years back but the captain doesn't have a record of the Gross Tonnage -- any owners out there have this information.

For the captains license this is not weight, but a measurement of internal volume

Tonnage - Wikipedia, the free encyclopedia

Thanks!

[amarinesurveyor]

I'm not an owner but I happened to look this up today for a 420 I'm surveying on Tuesday...it's 19 tons gross, 17 net, 2007 Lagoon 420.
Brian Stetler

[cat man do]

Originally Posted by amarinesurveyor

I'm not an owner but I happened to look this up today for a 420 I'm surveying on Tuesday...it's 19 tons gross, 17 net, 2007 Lagoon 420.
Brian Stetler

Oh dear

19 short tons = 17 236.5101 kilograms

[POH]

What tonnage cert type (international? british?) gives 19 gross and 17 net?

[Capt Phil]

There is also another tonnage/volumetric formula used by Bureau Veritas for those registering their vessel outside the US. It also includes the number of guns (12 pounders, I believe) they are able/registered to carrry. I ran in to this trying to remove a US vessel from USCG documentation and register her in the Cayman Islands while she was berthed in Mexico. Needed to find a bureau Veritas licensed surveyor in the US to do the survey for the registration. Lots of hoops to jump through but the owner was not a US citzen. All worked out well in the end. Phil

[boatpoker]

Originally Posted by Capt Phil

There is also another tonnage/volumetric formula used by Bureau Veritas for those registering their vessel outside the US. It also includes the number of guns (12 pounders, I believe) they are able/registered to carrry. I ran in to this trying to remove a US vessel from USCG documentation and register her in the Cayman Islands while she was berthed in Mexico. Needed to find a bureau Veritas licensed surveyor in the US to do the survey for the registration. Lots of hoops to jump through but the owner was not a US citzen. All worked out well in the end. Phil

I am a Transport Canada Appointed Tonnage Measurer. FYI The Caymans and BVI have accepted my tonnage calculations on Tranport Canada forms...... nothing about guns in my forms but they are in metric.

I have not done a 420 but my 410 numbers are 26.13 Gross & 24.82 Net.
Surprising given the numbers previously posted for the 420.

[Capt Phil]

Not surprised, boatpoker... I think the form that the BV surveyor used had that as one of the questions to complete on the survey form. Thought it was rather quaint at the time. He completed it based on the interior volumetric measure he assessed. Phil

[David M]

Don't bother trying to obtain or calculate those numbers just yet. If you gave the Coasties the displacement tonnage (short tons) they might be okay with that. They understand that it is not a cargo vessel. Call the CG and ask what they will accept rather than assuming they require gross tons.