08/10/2026
Every boat-shopping conversation I have ends up at single versus twin. Redundancy versus simplicity, fuel, cost. Fine argument. But I've come around to thinking it hides the question I'd actually want answered first:
Where is the running gear, and what's in front of it?
Capt. Chris Caldwell — he and Alyse train cruisers and he writes on this — makes the point plainly on his own site: on a lot of single-engine trawlers "the propeller is above the bottom line of the keel giving it and the rudder terrific protection in case of a grounding incident." And in his Great Loop boat-buying piece for Southern Boating he won't even pick a side on engine count — "Singles or twins both work" — while noting singles usually draw more water and twins usually draw less.
So the two things trade against each other, and neither of them is "engine count":
• Protection often favors the deep-keel layout — the keel takes the hit first. • Draft often favors twins — smaller wheels, less water. His numbers for the Loop are 5' or less, with 4' or less opening up more side trips and anchorages. • And it's a hull-and-installation property, not an engine-count one. His own page separates full-displacement twins, which can get real keel protection, from planing hulls, which don't.
Here's why it matters to a buyer: a listing will tell you "twin diesels." A listing will not tell you whether those shafts and props sit tucked up behind a keel or hang out below it. That's a haul-out photo or a straight question to the owner, and it's free. The Loop is a lot of skinny, murky water — that's the hazard you're actually planning around.
I'm not going to tell you how any particular model is configured down there. That's exactly the thing I'd rather have an owner or a surveyor who's had it on the hard tell me. But it's on my ask-list now, before I'd spend $2,000–3,500 on a survey:
• Is the running gear protected by the keel, or exposed below it? • Any haul-out photos from the last year? (One picture answers it.) • Has she been grounded, and what did it cost?
That's the sort of homework Can I Loop? is built to do — www.caniloop.net if you want to see a sample.
— Jesse