I'm trying to figure out if my setup can actually move my 24-ton liveaboard. I converted my 53' diesel cruiser from 1989 to run on two Haswing 2.5kW motors and a 1.6kW Garmin motor, all powered by a solar bank. I've run some tests, and I'm wondering: can these motors push the weight of my boat? Also, how fast can I realistically expect to go? I modeled some scenarios using the arpeggio.one calculator that fits my boat's specs. Any insights?
3 Answers
When it comes to being adrift with those power levels, safety is key! If you’re in calmer waters like the Puget Sound, maintaining a mile distance from obstacles and having quick access to reliable backups is crucial. It’s been my experience that for electric setups, especially in surge scenarios, having around 8 times the motor size calculated can save you. My hybrid setup keeps me safe because I have powerful diesel backups for emergencies. In the right conditions, you can enjoy cruising without spending a dime. Just remember, boats like yours aren't designed for rough seas!
You know, with your motors, it’s all about the conditions! My boat is lighter, about 7.5 tons, and I get around 2.7 knots on just 1kW. Your motors should do fine in smooth water, but they can struggle against wind and current. Just keep in mind, with your larger boat, you might sacrifice some speed unless you beef up your battery storage. Smaller hulls like yours are definitely more efficient!
Exactly, and it’s great to have a lighter hull - you'll get more bang for your buck with less energy used. Just plan for battery life!
You should check out the newer electric outboards from Mercury—they've got some good 10-15 HP options now that might suit lighter setups better. Elco offers some more powerful electric outboards too, which might be worth a look if you're considering upgrades. Just keep in mind the battery systems are usually matched to those motors, making them a bit trickier.
Totally agree! I’d always recommend a hybrid if you want to be safe. A little extra power goes a long way, especially when conditions turn rough.