Not to be a smarta**, but do you have any boating experience? The questions you have asked; can motor be used in sea water, runtime limits, suggest that you do not or have very little. The trip you mentioned can be daunting for an inexperienced person and I'm sure we all are concerned for your safety and want to see you come back alive.
I don't think anyone has mentioned PDFs. Don't neglect to take along a good one and also give someone your trip plan and make sure they know enough to contact the authorities if you are overdue.
Not to be a smarta**, but do you have any boating experience? The questions you have asked; can motor be used in sea water, runtime limits, suggest that you do not or have very little. The trip you mentioned can be daunting for an inexperienced person and I'm sure we all are concerned for your safety and want to see you come back alive.
I don't think anyone has mentioned PDFs. Don't neglect to take along a good one and also give someone your trip plan and make sure they know enough to contact the authorities if you are overdue.