I should have been clearer on the question.
What I meant by pusher dingy is the configuration where the built in dinghy transom (see 50/60 on HP site) drops down to pusher mode with the bow still attached to the bridge above, and becomes somewhat of a floating engine pod... I really liked this idea for a cat, but on a proa there is one ... complication, it is a one way configuration.
The pusher dingy is an especially appealing configuration, for the weight/cost savings, having a single engine or single set of engines for both vessels. One complication however, is you'd likely have to change the props out if you're stopping for an extended time, diameter and pitch requirements will be quite different for the different vessels. I have installed an outboard in the center console on my cat for this reason and it works surprisingly well. Although it's gas and not diesel, it's fantastic from a maintenance perspective and can double as the dinghy engine. Better yet, I can anchor, drop it on the dingy and row it in for maintenance and don't have to use boat yards etc. saving much time and money.
if I can motor sail on the wrong tack in < than 10 kts of wind then I'm good with the pusher configuration, as it keeps things simple and efficient and allows for a larger built-in hard dingy which is far better than a rubber duck swinging of a davids.
Another complication for both is heavy weather, how to stop the hard dingy slamming back into the bridge, becoming a wrecking ball. e.g. when crossing the gulf stream in, very steep large & confused seas. Assuming some sort of strong fixed supports would be needed. Maybe hydraulic rams to raise and lower the transom? bear in mind the 60 will require a decent (heavy) size motor 75hp+
In very heavy weather, I can drop a series drogue to slow the boat, tuck in the dingy and run comfortably, but if I need to go to weather motoring is a great for safety to help point the nose where you want it quickly.
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Posted by: ryanonthebeach@gmail.com
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