Question on the HM19 and NV23?

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L84lunch
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Question on the HM19 and NV23?

Post by L84lunch » Mon Jul 09, 2012 12:31 pm

Hi Everyone,

I was wondering if someone could put me in the right direction as I am kind of spinning from all of the reading I have been doing in the forum.

I was wondering where to start as I am looking towards the HM19 but would like the the same type of hull as the Novi23.

I guess questions are:

1. Can you shorten the Novi 23 to 19?
or
2. Can you build the HM19 with the NV23 style semi-planing hull?
or
3. Is there a different plan that combines the Novi hull (in a 19ft length) and the Harbor Master Pilot house and cabin?

Thanks in advance



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jacquesmm
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Re: Question on the HM19 and NV23?

Post by jacquesmm » Mon Jul 09, 2012 12:36 pm

Jacques Mertens - Designer
http://bateau.com

L84lunch
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Re: Question on the HM19 and NV23?

Post by L84lunch » Mon Jul 09, 2012 1:01 pm

Thanks Jacques

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jacquesmm
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Re: Question on the HM19 and NV23?

Post by jacquesmm » Mon Jul 09, 2012 1:09 pm

BTW, those hulls are planing hulls, not semi-planing.
Jacques Mertens - Designer
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L84lunch
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Re: Question on the HM19 and NV23?

Post by L84lunch » Mon Jul 09, 2012 2:42 pm

Is the hull bottom on the HM19 completely flat or flat enough that you would probably pound in say 1ft-2ft chop at maybe 5-10mph (Depending on conditions)?

Also, is the LB22 a planing hull?

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jacquesmm
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Re: Question on the HM19 and NV23?

Post by jacquesmm » Mon Jul 09, 2012 4:25 pm

I was thinking of the P19 and HM19 when I wrote planing.
The HM19 is a flat bottom planing hull, not all planing hulls have a vee bottom.
The Panga is a semi-planing hull: it goes faster than a displacement hull without pushing a big wake, gets on plane but top speed is not as high as a planing hull.
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Re: Question on the HM19 and NV23?

Post by Spokaloo » Mon Jul 09, 2012 4:49 pm

2 foot chop at 12 mph for the LB22 would be a piece of cake. In fact I was doing just that yesterday.

E

L84lunch
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Re: Question on the HM19 and NV23?

Post by L84lunch » Mon Jul 09, 2012 6:55 pm

Ok. Thank you both.

I think the Pilot 19 would fit the bill the best for me.

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Re: Question on the HM19 and NV23?

Post by chicagoross » Thu Jul 12, 2012 5:00 am

I went through that inteernal debate a while back. Liked the looks of the Novi a lot. The part that bothered me is that the Novi 23 can hang a 50 HP motor if built light, like the flat bottomed HM19, but the Pilot 21, shorter than the Novi, lists a minimum 90 HP. Thought long and hard about shortening a Novi...

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Re: Question on the HM19 and NV23?

Post by jacquesmm » Thu Jul 12, 2012 10:21 am

Unfortunately, nobody builds the NV23 light. All builders add comfort features and in that case, a 50 will not get it on plane.
The P21 was designed later and I abandoned my illusions about powering it with a 50.
The designer has to decide what the cruising displacement will be and I did put it much higher for the P21 but if you build her light, a 50 will get her on plane.
Light means no fridge, no extra water tank, no framed windows (plastic roll ups OK) etc.: a boat rigged for frugal week-end camping with a crew of 2 persons.
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