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Go Back   SailNet Community > Out There > Cruising & Liveaboard Forum > Provisioning
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Old 03-23-2004
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Fuel

Does anyone have a formula for how much fuel to take? In other words, what percentage of the time should one plan on motoring on a cross-ocean trip in the tropics with reasonably steady winds ...?
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Old 03-23-2004
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Fuel

S:

Since fuel is available virtually everywhere in the Caribbean and, as you noted, winds are usually abundant, fuel capacity isn''t usually in significant issue except in the extended run to windward made by cruisers along the coasts of Hispaniola and Puerto Rico. These are typically motorsails, fuel is available at intermediate stops, but you might want to lay out your maximum track, normal fuel consumption (against head seas/winds at reduced speed), and fold in a comfy margin.

Having said all that, I''d suggest a different guideline instead: stay away from jug farms on deck and plan to make do with your installed tankage plus what jug(s) capacity you can accommodate in your cockpit lockers. That''s a more seaworthy answer and should be adequate for any boat given some thoughtful planning.

Good luck on the voyage!

Jack
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Old 03-24-2004
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Fuel

Jack:
Are you advising the storage of Gasoline, in portable containers, inside enclosed spaces like cockpit lockers (which may be open to the accommodations)?

Note the ABYC Labeling Requirement for Portable Fuel Tanks (H-24.25.9.2):
“SECURE IN A WELL VENTILATED LOCATION”

I would NOT store Gasoline in any enclosed space!

Regards,
Gord
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Old 03-24-2004
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Fuel

Gord, I understood the question to be about diesel fuel because of the ''offshore'' context...but I didn''t ask.

Gas can be stored in a vented-overboard locker, in case we need to say that, but not in any space that only vents into the hull of the boat: leak -> vapors + spark = Boom!

FWIW I''ve seen some boats that enjoy multiple, small cockpit (older boats) or swim platform (newer boats) lockers which are ideal candidates to be used for gasoline storage by converting them to vent out thru the hull or transom. I dearly wish that option were open to me, altho'' I''d begrudge losing that storage space for other uses. Two small, canvas-covered gas cans are the only thing stored on WHOOSH''s deck, and even that seems to be too much on occasion!

Jack
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Old 03-24-2004
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Fuel

Thanks for the info. Two things - yes, diesel is the fuel in question, I should have clarified. The trip, however, is from Hong Kong to Nha Trang, Vietnam. Conservatively, 8 days in open water. What think?
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Old 03-24-2004
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Fuel

S:

I don''t know those waters nor how well your boat sails e.g. in light air. You might look at the pilot charts for that area and/or Jimmy Cornell''s World Cruising Routes, if it''s available, to assess expected winds for the time of your passage. In the end, it''s a fairly straightforward computation: how much motoring is likely plus how much additional battery charging X average hourly fuel consumption for your engine...not that you''ll end up with an exact answer for any specific passage, of course!

Jack
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Old 03-26-2004
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Fuel

Last time I was in that country they were shooting at us most of the time!! Never could figure out what happened over there. We were winning when I left!! Seriously Viet Nam is a diverse and beautiful country and the people are friendly.
Be careful, have a great time and don''t fall for the GI dog tag gimmick.
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