The insertion of a plastic tube into the skin fitting will work
as will most of the suggestions given. Cheap
, effective. However, most require that you address solutions rather than the problem - high water velocity. The carpet solutions sound good but they are another issue to address when tying up at the dock side. I had the same problem and solved
it by removing the skin fitting and replacing it with a considerable larger fitting and about half a meter of larger internal hose. I also added a two 90 degree turns to the plumbing
. The result was that the water velocity was lowered so it did not eject as a stream, it just dribbles.
There are also engine
outlets that have a rubber flap built in.
However, a near constant water flow down the hull
invariably leads to discolouring or staining.
Maybe a small rubber lip glued to the skin fitting to ensure the water does not run down the hull
would help in conjunction with a larger fitting with its own exhaust
Another radical alternative is (if possible) to plumb the AC water into another underwater skin fitting e.g. a cockpit
exhaust outlet etc.
I assume you are talking about the condenser cooling
water, but how are you managing the water that the air AC squeezes from the cabin
This water is produced at the evaporator which is usually high up in the cabin
structure. This can be considerable depending on relative humidity - usually seen running from under the AC when a car stops. Some boats run this water into the galley
. Maybe whatever drain is built into your boat
(?) could be shared with the condenser cooling
Another observation is that water cooled condensers are fairly expensive items and require a water pump
to work. Some boats use a split system with an air cooled condenser. These are cheaper to purchase
(being a domestic product) but are bulky ugly units which sit on the deck
and invariably rust quickly and are a bit noisy as well but there may be better quality air cooled units.
I would be looking for a solution that does not produce anything that protrudes and requires no further action on your part. Set and forget.