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22-01-2021, 18:15
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#1
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Registered User
Join Date: Oct 2016
Posts: 8
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depth of 43L (Leopard 43 Catamaran)
Hi all,
Fairly new here, we just purchased a 43L, and need to find the depth not draft for the CG simplified measurements form. The problem is our boat is out of the country and we are still in the US. Trying to get her registered asap.
Anyone out there have a leopard 43 and know your depth?
thanks so much!!
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22-01-2021, 18:20
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#2
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Senior Cruiser

Join Date: Nov 2013
Location: Port Moresby,Papua New Guinea
Boat: FP Belize Maestro 43 and OPBs
Posts: 11,181
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Re: depth of 43L
What's a 43L. What's the dfference between "depth" and draft? Presumably, it's depth is zero if it's still floating :0
Please don't post the same thing in multiple areas.!
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23-01-2021, 09:16
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#3
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Registered User
Join Date: Nov 2017
Posts: 125
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Re: depth of 43L
the depth measurement for USCG documentation is the height of just the cabin structure from the deck. Maybe Google for some line drawings or study plans from Lagoon. Or get a really clear photo, measure the known dimensions and scale from that.
Pat
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23-01-2021, 10:03
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#4
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Registered User
Join Date: Jan 2019
Location: Minnesota, USA
Boat: 21' trailer sailor & 8' sailing dinghy
Posts: 861
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Re: depth of 43L
Looks like in the case of a cat, tri, or pontoon 'D' it is the vertical from bottom to top of hull.
If someone can post a side view* I can take a plink at the measurement.
*not finding a side view for a 43L online...
__________________
Big dreams, small boats...
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23-01-2021, 10:20
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#5
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Registered User
Join Date: Nov 2017
Posts: 125
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Re: depth of 43L
that would only be for something like a pontoon boat or similar. if there's any buoyancy in the connecting superstructure they just need the cabin height from the shear. yeah, I know, weird. they have a strange formula for calculating tonnage also.
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23-01-2021, 10:34
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#6
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Registered User
Join Date: Oct 2014
Posts: 4,371
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Re: depth of 43L
You should be able to discern from these data specs and by proportional measurement from the side view. At least close enough for government work, a.k.a. the USCG.
Round to the nearest cubit and call it good. FYI: A cubit, noun, approximately equal to the length of a forearm. It was typically about 18 inches or 44 cm, though there was a long cubit of about 21 inches or 52 cm.
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23-01-2021, 12:07
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#7
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Registered User
Join Date: Jan 2019
Location: Minnesota, USA
Boat: 21' trailer sailor & 8' sailing dinghy
Posts: 861
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Re: depth of 43L
__________________
Big dreams, small boats...
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23-01-2021, 12:11
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#8
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Moderator

Join Date: Aug 2009
Location: Solent, England
Boat: Moody 31
Posts: 14,751
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Re: depth of 43L
Quote:
Originally Posted by StuM
What's a 43L. !
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No idea, stuck Leopard 43 in the title as a guess.
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23-01-2021, 14:57
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#9
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Registered User
Join Date: Nov 2007
Boat: Searunner 38 catamaran
Posts: 5,461
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Re: depth of 43L
Quote:
Originally Posted by Pete7
No idea, stuck Leopard 43 in the title as a guess.
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He states Leopard 43 in his 1st post
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24-01-2021, 10:25
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#10
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Registered User
Join Date: Mar 2014
Boat: Leopard 43
Posts: 57
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Re: depth of 43L (Leopard 43 Catamaran)
If it is a late 2000 Leopard 43 sailboat, it is 4' 3". I don't know about the new L43 power boat.
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24-01-2021, 12:50
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#11
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Registered User
Join Date: Dec 2011
Posts: 1,300
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Re: depth of 43L
The poster stated that he has a "Leopard" not a Lagoon.
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24-01-2021, 13:00
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#12
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Registered User
Join Date: Dec 2011
Posts: 1,300
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Re: depth of 43L (Leopard 43 Catamaran)
Section 6. of the fillable (it calculates the GRT for you) PDF version of USCG Form CG-5397 clearly indicates that the measurement for "depth" for a catamaran is from the bottom of the hull (that would be the part that hits bottom first) to the main deck.
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24-01-2021, 14:08
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#13
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Registered User
Join Date: Oct 2014
Posts: 4,371
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Re: depth of 43L
Quote:
Originally Posted by Spot
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Spot is Spot On as to the calculation of depth.
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24-01-2021, 14:29
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#14
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Registered User
Join Date: Nov 2017
Posts: 125
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Re: depth of 43L (Leopard 43 Catamaran)
that's not what section 8 of the USCG form states.
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24-01-2021, 14:42
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#15
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Registered User
Join Date: Dec 2016
Location: Australia
Boat: Tasman 40' catamaran
Posts: 1,039
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Re: depth of 43L (Leopard 43 Catamaran)
have you thought of contacting leopard ?
btw 'depth' of a vessel is defined as "The depth is measured at the middle of the length, from the bottom of the keel to the top of the deck beam at the side of the uppermost continuous deck."
a simple way of looking at it is draft + freeboard
cheers,
__________________
"home is where the anchor drops"...stuck at Lake Mac for a while due to medical problems...heading north soon...
maintaining social distancing !
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