Originally Posted by J.W.W.
Absolutely not a clue if a single engine is a good idea on boat with a wide pad like the Atlantic. We can always change the HPDI when not ok and buy a pair of engines in return when characteristics are not as wished.
first of all - keep up the good work, it looks very serious indeed!
I think you will be ok with a single big engine on the back provided you amended your transom to deal with it. With regards to the shape of the hull: we run similar power on a similar size boat with a 'flattened back end' without any problem (although I propped her very 'conservatively') . I am not sure if my/our hull can be compared with an atlantic hull but still, it looks like a heavy all weather type of boat so fair chance she can handle!