only through hull on starboard side back there is water intake for engine, but you may want to check also the transom through hulls as they have a tendency to crack at 30 years. although only the exhaust is low enough to maybe leak at mooring. but there is a ~6 in. piece of hose with two hose clamps to check as well on the exhaust. If I remember correctly if it is leaking it will not drain down directly below the engine but through the starboard quarter berth or below that false floor you see directly under the engine.
