The AT-34 I recently chartered has a wet exhaust with a water separator and two exhaust pipes - an impressively large can nicely insulated and painted.. My very first thought on seeing it was, a likely failure item down the road... Seawater and exhaust gases do not mix well with metal, especially when it cannot be inspected... My druthers would be a dry exhaust with a tall stack... The upside of of the system used on the AT is that it is VERY quiet and only once in a while a whiff of exhaust gas when the rear saloon door was open... denny / k8do ************************************