Party Boat hull designs

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Party Boat hull designs

Postby stingray64 » Thu Dec 29, 2016 4:54 pm

Are all party boat hulls displacement type?
Is a Gillikin, Lydia, Yank, and Gulf craft under water hull design basically the same?
Also assuming all the boats were the same length, what would make one boat, as far as pitch and roll, more stabile than another? for example is a 20 ft beam more stabile in a beam sea than a boat with only 16 ft.
Does weight matter? for example a wood/glass boat is more stable in pitch/roll than aluminum?
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Re: Party Boat hull designs

Postby captjoekingcod » Thu Dec 29, 2016 7:14 pm

All the hulls you mentioned are planing hulls.
They all differ in design. The chines set up different, different size keelsons, different degrees of deadrise, different bow flares, different draft, shaft angles, distance between shafts, etc, etc.
Displacement hulls, are mostly single screw vessels, with big, full length keels. Usually pretty slow. Very few party boats set up that way.
Yes, beam and weight will make a boat more stable, along with how much boat is actually under water. Also chine design. The chine is the outboard edge of the hull. Some boats have sharp edges (hard chine), some more rounded (soft chine). A hard chine boat will roll less in a beam sea.
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Re: Party Boat hull designs

Postby EC NEWELLMAN » Thu Dec 29, 2016 8:25 pm

Are all party boat hulls displacement type? Is a Gillikin, Lydia, Yank, and Gulf craft under water hull design basically the same? Also assuming all the boats were the same length, what would make one boat, as far as pitch and roll, more stabile than another? for example is a 20 ft beam more stabile in a beam sea than a boat with only 16 ft. Does weight matter? for example a wood/glass boat is more stable in pitch/roll than aluminum?


One of the more interesting questions I have seen posted on FISHING UNITED.com

Captain Joe 'KING COD' gave you a concise answer but one of the more interesting issues when looking at these factors you mentioned are literally within the BUILDERS of these party boats.

This was discussed last week while I was in Captree and talking with a few captains, and can be seeing with the numerous variations and shipyards of GILLIKIN (as seen on Mels-Place @ MIKES MARITIME MEMORABILIA) or the early vs later versions of LYDIA boats or the numerous variations of GULF CRAFT, BREAUX, YANK or DERECKTOR.

The differences seen within these yards could vary from those were stable platforms, while others would rattle the fillings out of your teeth. Differences were seen in various GULF CRAFTS over the years especially when the price of aluminum starting to go up and "tweaks" were made to lessen the cost of similar sized vessels built in latter years.

Some captains when building boats preferred wood and the latter glass over wood since they could "easily" (depending on the skill set of the owner) work on them while others felt that aluminum was the future as higher upfront costs will give not only longer life, but make the vessel able to get involved in the offshore fisheries and at the time of sale a higher price and return once sold.

As for engine power, how many small vessels had one single engine or to the most notable engine for a few decades being the all to familiar DETROIT DIESEL to those with triple screws for added speed.

Much to discuss and for those who have been around, the captains who built boats who would sometimes say, "if I would of had the money or known better, I would have done or built this...."

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