Join Date: Sep 2007
Location: Pasadena Md - Magothy side
Thanked 31 Times in 31 Posts
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Re: Back-up motors
If this is a charter - ask the charter company if you can mount the dinghy motor on the stern to get a few extra tenths of boat speed.
I guarantee you will shortly be told you don't have the experience necessary to charter the boat without a paid skipper.
Displacement boats have hull speeds that can't be surpassed except for brief surfing down a wave. There is a reason they are called auxiliary sailboats - the auxiliary is the engine meaning it's the secondary source of propulsion. The engines are sized to take the boat to hull speed in reasonable sea states at 3/4 throttle.
Ask the charter company what happens with you max the throttle out for more than a brief burst - and tell them you really need that extra tenth of a knot to get to your destination quicker. Same results will occur, make space for a charter skipper.
Lashing the dinghy to the side for a few tenths because the sea state is such that you are only making 5.5 knots is counter indicated by the very sea state you are trying to get through. Again, ask the charter company, and empty a berth for the skipper.
Now if this is a friends boat - absolutely ask the soon to be former friend if it's okay.
As a backup when the engine dies and you have no wind - think about it - that outboard probably has 4 - 5 gallons of fuel at most, good for 4 to 5 hours of pushing the boat at 3 knots in flat water. Maximum range is easy to calculate - in flat water. Don't even try to tow a 45 footer with a 10 foot dinghy and a 9.9 (standard charter dinghy/ob). The dinghy will saw side to side and you'll get 2 knots of SOG to your destination.
Use the sails if you want to get there faster. It's what they are for.
Lessons learned are opportunities earned.