Just curious as to much a dinky stowed on deck or roof effect ones rate of roll? Is it enough to take it into consideration for adding a davit on back or crane to place the dinky on deck? Is it enough that folks will take the dinky off and tow it when the seas get rough? Would love to hear some thoughts, opinions or experiences. Thanks.
How much will a dinky stowed on deck/ roof affect roll?
- Thread starter Roll Tide
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That's too much an open-ended question. There are many items needed to form an equation. Could effect roll a lot or barely... Give us something to work with.
Happy Season! - Art
SCOTTEDAVIS
Guru
You would never feel a 50 ft dink on the top deck of a CVN.
Like Art said, what on what.
None on this one
Like Art said, what on what.
None on this one
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In general more weight up high will slow down the roll period, just like a mast on a sailboat does. But it will reduce ultimate roll stability. But a couple of hundred pounds isn't going to do much.
Don't think about towing in rough weather. If you sink your dinghy you will be stuck with a sea anchor off of your stern until conditions improve.
David
Don't think about towing in rough weather. If you sink your dinghy you will be stuck with a sea anchor off of your stern until conditions improve.
David
Actually David, I respectfully disagree about towing in rough weather (having done it a lot). If you are using the proper bridle and hardware and have the dinghy back at the best distance for conditions, then it's the safest place for it to be!
ERIC
ERIC
I've towed in fairly rough conditions... but, I have not towed in really rough conditions. Matter of fact, I have always made sure I don't get into moving through really rough conditions if at all possible; as I try to use my pleasure boat for pleasure only. So, I've not had a towed tender sink on me. That said... there was one time when it did get rougher than expected. I kept eye on towed boat and if it did go under I figured cut the line and let her go! Would be a bummer, but - Oh Well!
Art and Scott
Thanks for taking the time to reply. We just finished a week on a cat in the BVIs. As one would expect the cat had very little roll which made the wife happy. I really liked having the dinghy on a davit in back. I was able load it by myself. Which made me happy. It made me even happier when the kids would do it. As I look at cockpit motor yachts such as Grand Banks/Hatteras all the dinghies are stowed on top. This looks like a two man operation and it would add to the roll distance? What are your thoughts ?
Thanks for taking the time to reply. We just finished a week on a cat in the BVIs. As one would expect the cat had very little roll which made the wife happy. I really liked having the dinghy on a davit in back. I was able load it by myself. Which made me happy. It made me even happier when the kids would do it. As I look at cockpit motor yachts such as Grand Banks/Hatteras all the dinghies are stowed on top. This looks like a two man operation and it would add to the roll distance? What are your thoughts ?
Nomad Willy
Guru
It depends how dinky the dinky is.
Pack Mule
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This dinghy storage thing is a big issue . I would like to store mine on top because it would be out of the way and look better ,but I want o use mine on a regular basis . My thoughts are if it is a PITA to get down you probably Will only use it when you have to . It could be like having to get something out of the attic and you know we all love that .I'm thinking either custom simple davits or weaver davits . I have spent more time drawing , thinking and pestering people about this dinghy storage thing than I care to say .
MurrayM
Guru
That's our problem, in that we bought the best/biggest boat we could afford without borrowing money from the bank, but our dingy needs are pretty extreme.
The smallest dingy we're contemplating is an 11'1" Takacat Explorer takacat.com - The new generation of rigid inflatable catamarans to be used for exploring and photographing BC's outer coast and river estuaries once Badger is safely anchored. It will also have to be deployed quickly when whales, bears, etc are spotted between anchorages.
This is our thinking so far...Badger has an 11' beam, so the 11'1" Takacat may fit on modified Weaver snap davits while docked if the dingy is "scootched" a little to one side. While underway there are four options;
1) Mounted sideways on swimstep (like a parachute underway, good for entering/exiting marinas),
2) lash it to the saloon roof (big, heavy, difficult in wind),
3) tow it (fine for the most part, but might get airborne in big winds),
4) in bigger winds we could tow it with the stern tubes lifted up and attached to some sort of pivoting arrangement on the stern, whereby just the ends of the bow tubes would be in the water. Here's one commercially available example: http://www.dinghy-tow.com/about.htm
Being former sea kayakers, the call of surf landings on outer beaches and thin water (as in inches) exploration is compelling. As an example, there are small uncharted pocket beaches near BC's Cape Caution where the sand is so fine it squeaks when you walk on it.
Maybe this spring...
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Donsan
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Does the TNT lift include a fiberglass swim platform?
It sounds like a good concept unless you have a teak swim platform like some old trawlers.
Yes, the fiberglass platform IS the lift. The V-chocks slide into slots on the platform with a simple pull pin to remove. A bonus of the TNT is that it is a pretty large swim platform and once the dinghy is off, you can leave it down in the water for guests to enjoy. Kind of like having a shallow beach at the back of your boat.
Attachments
So, let's recap: You remove and sell/discard/burn the old high-maintenance teak swim platform and install a hydraulic dinghy lift/swim platform/wading pool that has NO teak on it...sounds like a win-win to me. The only drawback to the TNT is the cost $$$. REALLY glad the P.O. spent those unrecoverable dollars!
Bay Pelican
Moderator Emeritus
Krogen 42s are designed to have a maximum of 750 pounds on the boat deck including the helm chair, all equipment, the dinghy and motor and people. Anything over that reduces stability.
TNT appears simply great. Can you provide cost guestimate for your size (what is yours in width/length)? I saw video of operations - WOW - What Fun!
markpierce
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Haven't noticed a difference with the eight-foot Trinka on the saloon roof. But then, the Coot is a 14-ton boat.
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hmason
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We keep a 650# Boston Whaler (includes the motor) up on the boat deck. It is an easy one person job to launch and takes about 5 Minutes. I can put it up top myself but it is much easier with a helper. Operating the crane. The issue is not the lifting, it's the aligning it properly in the chocks that is the PITA. I will say that with practice we are getting better and faster at doing that. There is no perceptible difference in roll from when we had a 27# inflatable up there.
I SURE want you to keep on enjoying it! Don't know why my PO was not so nice to me... :lol:
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I'm not convinced the hydraulic stern lifts are the best answer. My alloy RIB is relatively lightweight but has a beam of 7ft. I dont want a platform that wide at the back of the boat. Or to have that much extra length added onto the length of the marina slip required.
psneeld
Guru
I see your point.
Though in general.....
Anytime the word "best" is used about a boat, piece of equipment, cruising area.....well.....just about any TF topic you are sure to be challenged as generally "best" is just too subjective.
"Best" for me, my boat, my cruising...... is the only way you can really get away with the term.
Many here understand when people use the word they really mean their own specific view of the topic....but even then chiming in to make sure a newbie understands that "best" is relative....is necessary.
Yep, "best", a four letter word that starts some great debates here....
I see your point.
Though in general.....
Anytime the word "best" is used about a boat, piece of equipment, cruising area.....well.....just about any TF topic you are sure to be challenged as generally "best" is just too subjective.
"Best" for me, my boat, my cruising...... is the only way you can really get away with the term.
Many here understand when people use the word they really mean their own specific view of the topic....but even then chiming in to make sure a newbie understands that "best" is relative....is necessary.
Yep, "best", a four letter word that starts some great debates here....
Especially regarding boating; it seems that words such as: "best", "all", "forever", "never", "always"... and even words like, "can't" and "can"
Should always be automatically italicized as reminders on marine forums that those words meanings for marine doings may be elusive at best.
Because, try as you might regarding marine items, one simply can't always nor forever get all the best things to work out. But, you can try; and, of course never give up!
Happy 2015 Boating Daze ! - Art
The word "best" almost always applies to a given situation, boat, owner, experience level, etc. I think it is correct to assume that Brian was saying that a hydraulic stern lift is not the best answer for HIS situation. For my situation, it happens to be the best answer - not least of which because the lift was on the boat when I bought it!
But, on that topic, I have hoisted heavy dinghies over bow rails onto foredecks with hydraulic deck cranes, high up onto coach roofs with electric deck cranes, and tipped up onto swim platforms with the outboard mounted on a deck rail.
What I said in my post is that the TNT lift allows the easiest dinghy "deployment" of any of them - and I stick by that; Push the button on the key fob, and in 15 seconds the dinghy is floating free. Easy for ANYONE to do. It also has the other benefits of a large, submersible swim platform. However, even beyond the high cost, there are certainly other drawbacks to a unit of this type: Dealing with yet another battery (powers the hydraulic pump), access to the hydraulic pump and battery, trying to avoid damaging the dink when backing into a slip, and simply having that dinghy taking up the entire swim platform when trying to tie up the boat.
It is also probably not the very best place to have a heavy dinghy when running in big seas - in fact, TNT recommends putting the dinghy into the water and towing it under those kinds of conditions. So, is it the "best" solution? For me? With this boat and my intended uses? Yep.
If I were doing it over I would find a way to put it on the bow. Getting it up and down from the top is awkward and in wind it can be difficult. Stability is definitely affected up that high. One time I forgot and it got a few inches of rain water in it and I sure noticed the stability change. You have to decide in advance whether or not you will use the dink before docking.
More and more I see people towing small boats such as whalers for good reason.
More and more I see people towing small boats such as whalers for good reason.
