Agility — 20
A character on the deck has a chance (20% -1% per point of Agility) to fall overboard and die (the sailor skill automatically gives -20%).
Characters on the sails (two of them) have a chance (30% -1% per point of Strength) to fail an action and have a chance (40%-2% per point of Agility, the sailor skill automatically gives -20%) to fall overboard and die.
You both have the same Strength. The only thing is, if lightning strikes, it will kill someone on the deck with the same probability.