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04-02-2018, 01:55 PM
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#1
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Senior Member
City: MIAMI
Join Date: Aug 2017
Posts: 244
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Large tender onto sundeck?
I'm going to buy a 40-50ft trawler for liveaboard that can act as a roaming fishing mothership. I currently have a little 14ft CC catamaran skiff (Twin Vee) with a 50hp. It's an awesome 1 man setup (and decent for 2); it handles offshore on calmer days and can float over shallow flats.
I can't really imagine being able to go smaller than that. Claimed dry weight is 650 -- so obviously in the 1000+lb range with motor and basic gear. Curious if it'd be feasible to occasionally davit winch a boat that size onto a 40-50ft Trawler sundeck (or bow)? I imagine it'd be more doable on a 50 than a 40, so that's why I'm asking because if so, I'd be more inclined to buy a trawler on the large end of my size range.
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04-02-2018, 02:12 PM
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#2
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Senior Member
City: Essex, Ct.
Vessel Name: Harmony
Vessel Model: 1982 41' President
Join Date: May 2013
Posts: 442
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My 41' President tender on the bow has a weight limit of 300 lbs which is lifted by a crane. I think the design needs to be verified by the mfg.
I have an 11' AB Aluminum hull RIB with a 20 HP 4 stroke Merc outboard.
I remove all gear prior to launching including gas tank and dive gear.
__________________
Tom
"Harmony"
1982 41' President
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04-02-2018, 02:39 PM
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#3
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Moderator Emeritus
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,185
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I would not want to put that much weight up on the top of my sundeck due to how much effect it would have on stability. Maybe on a 50’ boat.
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04-02-2018, 02:44 PM
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#4
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Senior Member
City: Bainbridge Island
Vessel Name: Mahalo
Vessel Model: 2018 Hampton Endurance 658
Join Date: Apr 2016
Posts: 497
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You said "I'm going to buy a 40-50ft trawler..." but no hint of year, semi or full displacement, etc. Creating this capability in a new build is probably more easily solved. Doing it with at 30 year old boat is another matter entirely. Besides the physical space issue, you have whether the various decks can support the weight of the tender and the crane. And what it does to your boat's stability.
In this video:
The hosts talk about their boat's refit of the boat deck, including structural changes they had to make. Might be of interest to you. Good luck and happy fishing!
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04-02-2018, 02:57 PM
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#5
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Senior Member
City: MIAMI
Join Date: Aug 2017
Posts: 244
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Quote:
Originally Posted by JustBob
Creating this capability in a new build is probably more easily solved. Doing it with at 30 year old boat is another matter entirely.
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It's gonna have to be a 30 year old boat.
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04-02-2018, 03:00 PM
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#6
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Senior Member
City: Bainbridge Island
Vessel Name: Mahalo
Vessel Model: 2018 Hampton Endurance 658
Join Date: Apr 2016
Posts: 497
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Quote:
Originally Posted by ERTF
It's gonna have to be a 30 year old boat.
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(If this tender setup is your #1 priority) I think I would try to find a marine architect or two that knows this kind of work, and have them suggest the boat to look for.
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04-02-2018, 03:11 PM
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#7
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Senior Member
City: MIAMI
Join Date: Aug 2017
Posts: 244
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Figured first step would be to see if anybody here chimes in that they do something similar -- and then take note the size/make of their vessel & tender system. I've seen 13 ft whalers on sundecks and bows, so it's not a total fantasy out of left field.
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04-02-2018, 03:28 PM
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#8
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Guru
City: Palm Coast, FL
Vessel Name: Coquina
Vessel Model: Lagoon 380
Join Date: Jan 2017
Posts: 2,570
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I've seen several fishing boats out of Spanish Wells towing up to 6 fishing boats at a time in remote areas, like Cay Sal. This solves both the storage issue and the inevitable issue of lifting a largish boat in heavy seas. And these guys have 50/60 footer mother ships. Just another idea.
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04-02-2018, 03:36 PM
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#9
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Senior Member
City: MIAMI
Join Date: Aug 2017
Posts: 244
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Yeah I know it's possible to tow. I was just thinking in situations like locks or docking particularly single-handed, it would be really nice to have the option to not have to worry about the skiff behind me. Also possibly preferable for a Bahamas crossing.
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04-02-2018, 03:59 PM
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#10
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TF Site Team
City: Jacksonville
Join Date: Nov 2008
Posts: 11,681
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A 13.5’ Avon, center console with a 50 hp 2 stroke came with Hobo. Total weight was over 600 lbs. Lowering and raising her off the boat deck was an experience. The previous owners had her for 10 years and never had any issues. We sold her for something a little lighter but it worked for them.
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04-02-2018, 04:15 PM
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#11
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Senior Member
City: Vancouver
Vessel Name: Sea Q
Vessel Model: Westport Mc Queen
Join Date: May 2015
Posts: 225
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On our 90 footer we have a 19 foot inflatable tender with a 90 horse
it weighs over 2000 lb
When bringing in the tender the big boat lists about 5 degrees making it a two man job to swing in.
Also you have to make sure the tender is tied down tight
Even in the nicest weather
Things go bad quick and I have seen it rise off the chocks a foot in rollers off of Campbell River.
Personally we only needed a 15 footer
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04-02-2018, 04:22 PM
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#12
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Guru
City: Brookline, NH
Vessel Name: Shalloway
Vessel Model: Defever 44, twin Perkins
Join Date: Sep 2013
Posts: 2,260
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How about an aluminum hulled RIB? For example you can get a 14' AB aluminum hull RIB with console that weighs 367 plus motor. If you can do without the console you can drop down to 247lbs for the same size boat.
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04-02-2018, 04:27 PM
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#13
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Senior Member
City: Out and About
Vessel Model: Sold-GB 52 Europa, Queenship 59, Tolly 45
Join Date: Nov 2016
Posts: 484
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We had a 13ft Rendova with a 40 hp Yamaha on the boat deck of a 60 foot boat. About 1000 lbs. It is doable but requires two people to launch and retrieve. Forget it if there is significant wind/wave action unless you want your dinghy come through the saloon windows. Make sure your tie downs can handle the substantial forces when you get into some bad weather. We know a couple that lost their heavy dinghy from the boat deck crossing Georgia Strait. Did quite a bit of damage as it fell into the cockpit and then overboard. The captain was busy keeping the boat from broaching and could not deal with the loose dinghy.
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04-02-2018, 04:35 PM
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#14
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Senior Member
City: MIAMI
Join Date: Aug 2017
Posts: 244
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RIBs just aren't setup for fishing at all, plus a 14' RIB wouldn't have close to the space of my little cat (which is already a very compact fishing platform). Also, with motor and everything, it's still gonna weigh close to 700lbs, so I don't see a big weight payoff for all that sacrifice.
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04-02-2018, 04:36 PM
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#15
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Senior Member
City: St James City, Fl
Vessel Name: Sweet Pea
Vessel Model: Nimble Nomad 25' Trawler
Join Date: Mar 2010
Posts: 190
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I travel on a 52' sportfish(lot of open space on the bow) that we carry a 13' Boston Whaler on the bow. The boat came from the factory with a 1000 lb crane and the Whaler is probably pushing that limit. As stated, the boat will list some when loading and its a 2 man job. And definitely not a job that you would attempt in rough weather.
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04-02-2018, 04:52 PM
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#16
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Senior Member
City: Bainbridge Island
Vessel Name: Mahalo
Vessel Model: 2018 Hampton Endurance 658
Join Date: Apr 2016
Posts: 497
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This will work:
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04-02-2018, 05:11 PM
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#17
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Guru
City: North Carolina for now
Join Date: Aug 2011
Posts: 6,348
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I'd have a very good yard or a naval architect weigh in on a specific boat you are interested in. We launched a 13' Whaler off the boat deck of an 18'2" beam Hatteras frequently for many years; it caused almost unnoticeable list and I even did it my klutzy self a few times. In bad conditions, I found retrieving to be much more of an issue than launching, logistics-wise. I knew some folks with 15'10" beam Hatteri that also launched Whalers and notice 2 things: list was more pronounced, and a 13 footer extended beyond the boat deck some. Keep beam in mind more than length! But in each case the boat deck was designed to support a 1000# + tender.
__________________
George
"There's the Right Way, the Wrong Way, and what some guy says he's gotten away with"
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04-02-2018, 05:16 PM
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#18
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Guru
City: Queensland
Vessel Model: Milkraft 60 converted timber prawn trawler
Join Date: Jul 2016
Posts: 5,482
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A mates 65 fter carries 21ft with a 150 up top, he reckons roll is reduced in a seaway.
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04-02-2018, 05:18 PM
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#19
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Guru
City: Queensland
Vessel Model: Milkraft 60 converted timber prawn trawler
Join Date: Jul 2016
Posts: 5,482
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Apparently displacement hulls can carry a load up high
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04-02-2018, 09:15 PM
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#20
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Guru
City: Seattle
Vessel Name: AZZURRA
Vessel Model: Ocean Alexander 54
Join Date: Aug 2017
Posts: 4,308
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I carry a 1000lbs dingy (12’ rib/60hp Suzuki). I have a 2000lbs crane which makes quick work of launching and recovering. The dingy use 5 quick lock straps that lock her sown tight enough to take on any conditions I can handle. Problem is my boat is in the 50-60 foot range.
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