boat stability

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bigmofodad
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Joined: 15 Aug 2010, 10:07

boat stability

Post by bigmofodad » 07 Aug 2016, 12:38

What's the difference in stability between a jon boat with a 42 in beam and a 48 in beam. Any help would be appreciated.

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turbotodd
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boat stability

Post by turbotodd » 11 Aug 2016, 08:31

There's a lot of variables, but given that both the 42 and 48 are identical hull shape and design, and similar weights, there is a difference however it's not night & day.

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onthewater102
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boat stability

Post by onthewater102 » 11 Aug 2016, 08:57

You're using the term "Beam" and speaking about jon boats (typically flat bottomed boats). Flat bottomed boats width is measured at the base of the transom, so a 1442 will be 42" wide along the base of the floor. The beam measurement is the widest point from the top of one gunwale to the other perpendicular to the keel line - for instance a 1436 flat bottom boat has a 57" beam - but would be considered to be 36" wide.

Utility boats are measured at the beam and are sometimes referred to as jons but are measured according to their beam width. So you can find a 1457 utility offered by Lowe right now - but it isn't 57" wide at the base of the transom.

If you're talking about flat bottom boats the difference in stability will have a lot to do with the length of the boat. The difference in stability between a 1442 and a 1448 won't be nearly as extreme as it would be between a 1242 and a 1248. Also, sometimes as you get into wider boats you start getting into designs with higher sides, so you can easily get into an apples an oranges comparison if you're not looking at all the dimensions all the time.

It isn't quite as bad as women's clothing sizes, but its far more convoluted than it ought to be.
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Ictalurus
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boat stability

Post by Ictalurus » 12 Aug 2016, 12:30

bigmofodad wrote:What's the difference in stability between a jon boat with a 42 in beam and a 48 in beam. Any help would be appreciated.
You will be able to tell, get the 48".

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kmfw160
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boat stability

Post by kmfw160 » 10 Jan 2017, 10:16

Since stability is the discussion and a 1436 was described; can ya'll give me a good description of the actual stability...I'm modding my 2013 Alumacraft 1436lt right now. My fwd deck will be flush with front seat and I don't want to look like I'm on the dance floor on the water lol. Thanks in advance
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onthewater102
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boat stability

Post by onthewater102 » 10 Jan 2017, 10:21

I have the same alumacraft 1436LT - I set my front deck level to the top of the middle bench & at my heaviest early last year I was 245lbs & when I would stand on it the water came up the sides roughly to the bottom of the stamped rib in the side. It wasn't nerve racking, but if you're on busy water with a lot of boat wakes you will need to retreat to the back of the boat on occasion to get the bow up.
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For Sale - Custom Hand Tied Jigs, Bladed Jigs,Custom Rods

2002 Alumacraft 1436LT w/ 1984 Mariner Tiller Converted to Remote & 55# Minn Kota Terrova 12v (removable)

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RiverBottomOutdoors
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boat stability

Post by RiverBottomOutdoors » 10 Jan 2017, 11:41

There is a noticeable difference between 42" and 48" bottom boats. There is a night and day difference between 48" and 36". I came to this opinion by bowfishing (mostly with 2 people standing) from all 3 sizes (1436, 1442, 1448)

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hoosier78
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Re: boat stability

Post by hoosier78 » 10 Jan 2017, 14:54

Very noticeable diffence in my opinion


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