Using lots of guesswork, I think you could motor
at reasonable rpm
, or motorsail, for up to 5 days...for a range of like 600 miles. Thats lots.
Sure, you could carry a jerry can or two if it makes you feel better, but its a sailboat. I crossed the atlantic on a swan 48 which only held 24 hours of fuel. We used it all getting to the canaries
, and added a bunch of jerry cans for the big crossing to antigua
. We used most of the fuel getting south, looking for the trades, but once the trades kicked in we flew across.
IMHO, the fuel capacity of the IP38 is more than enough.