Tenders stored on foredeck

Discussion in 'Boat Design' started by sabahcat, Nov 23, 2010.

  1. sabahcat
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    sabahcat Senior Member

    What are forum members thoughts of foredeck mounted tenders?
    I do see them on other boats

    Some will travel at higher speed than mine

    [​IMG]

    Others will be closer to the water and heeled

    [​IMG]

    Its never been something I have been a fan of, but I do want a large tender on my vessel (below), so for weight distribution purposes I am thinking a fordeck mounted dinghy with small crane would be beneficial.

    It will predominantly be doing calmer passages in equatorial waters at around 10 knots.
    The foredeck is about 1600mm off of the water

    The vessel is a catamaran, as is the tender
    The motor can be left in the down position with leg protruding into a large wet locker.
    Anchor chain is still free to run between the two hulls of the dinghy.

    Thoughts?
     
  2. FAST FRED
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    FAST FRED Senior Member

    For an inshore boat that prefers anchoring , stern davits probably are the easiest to live with.

    For the marina boat , that doesn't launch every day , the foredeck is fine.

    It must have a crane or other simple one person launch and recovery system.

    Or it is more trouble than its worth.

    FF
     
  3. michael pierzga
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    michael pierzga Senior Member

    Whether you choose bow or stern storage Best to keep the profile of the tender low and its footprint small .

    The outboard motor is the troublemaker. I just chop and hinge the transom so that the motor folds into the tender. height length footprint have now been reduced.

    secure the tender into a decent cradle with shackles and a turnbuckle bow and ss chain and shackles aft. Three wichard folding pad eyes fastened into the deck. .

    Folding flat cradles or removable cradles are the way to go.

    If stored athwart ships bore a decent size drain hole plug system in the bow.
     

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  4. mark775

    mark775 Guest

    "I just chop and hinge the transom so that the motor folds into the tender" - Very clever, thanks. I will copy!
     
  5. michael pierzga
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    michael pierzga Senior Member

    Keep the bottom of your chop chop folding transom just above tender load waterline to avoid and waterproofing detailing. Ive used the same rig up to 25hp. Ive always used SS to fabricate the hinge...heavy and expensive. Aluminum will work fine.
     
  6. pool
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    pool Junior Member

    very smart setup! :idea: will go straight to my tech notepad
     
  7. Willallison
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    Willallison Senior Member

    Personally I hate 'em - particularly on vessel where visibility will be effected - like the lower helm on the Maritimo in your 1st pic. In many other cases it hampers foredeck access. So often, tender storage is an afterthought.
    I will concede however, that there is often nowhere else....
     
  8. michael pierzga
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    michael pierzga Senior Member

    When the inner fore stay, emergency tiller access, mainsheet dead end.... gets in the way of you dingy storage simply...chop chop... a hole thru the bottom of your tender so that you may re rig the inner fore stay or whatever, thru the bottom of your tender once the tender is chocked up.

    First a round glass tube of suitable diameter is glued into the Chop Chop hole and faired off, then A simple two piece plug is fabricated using the removed deck and hull pieces ,, rubber O ring seals on its lips and clamping bolt to draw them together .

    does the trick of plugging the hole when the tender is in service. ..
     

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  9. sabahcat
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    sabahcat Senior Member

    Clever idea but cant really work in the dinghy I have in mind
     
  10. sabahcat
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    sabahcat Senior Member

    I agree I dont like the idea much either.

    I did consider a nice version if this

    [​IMG]

    but as I actually have buoyancy in the ends of my boat I dont have as much room as in this pic, and the dinghy is longer than the space between the hulls (3.1m)
    I am not going to compromise on dinghy size which will be about 3.8m x 1.7m

    Instead,I have built a platform,step to step , which is a nice back deck, fishing platform and workshop area
    It also allows me to lift the dinghy and then swing athwartships, but, like I said, this extra weight aft "may" affect trim while on long passages.

    [​IMG]
     
  11. michael pierzga
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    michael pierzga Senior Member

    Hmm...must be something different from the standard yacht tender ? I like 3 meter plus open rib tenders as a work platform ? Guess you could go 6 meters panga style ..chop chp in half, bow half forward in a cradle and stern half aft as some kinda seating ..mini bar ? Three meter bow section for general tendering... add bolt on 3 meter stern Mii bar and ...presto a 6 meter panga for long distance cruising and hauling chicks off deserted islands. . Might work...ive seen some crazy stuff by free thinking people over the years.

    And for aft tenders a pair of davits works better than any contraptions and can be made multi purpose...awning supports or general crane duty...hauling big chicks or tuna...cases of beer ..you name it
     
  12. sabahcat
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    sabahcat Senior Member

    Take the plug with you and it'll prevent theft of dinghy while ashore plus give a nice hole to run a chain through
     
  13. sabahcat
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    sabahcat Senior Member

    A slightly scaled down version of this
    [​IMG]
    Built from this
    http://www.polycore-honeycomb.com/index.php

    Deflateables don't like being banged into oysters and reef
    Freeboard isn't enough to keep crocodiles at bay
     
  14. sabahcat
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    sabahcat Senior Member

    This will very rarely if ever be a marina boat

    She does have an area down aft to store the dinghy for the short hops between anchorages and for nightly lift and stowage

    Foredeck option was for on passage if trim is affected by extra weight down aft.

    I would like to think that the extra weight of diesel, water, chain and batteries further fwd would counterbalance engines and dinghy
     

  15. Willallison
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    Willallison Senior Member

    Yikes!!!:eek:
    So when you need to ditch the tender in an emergency, you have to release the inner forestay???
     
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