You've got a lot of time at sea. Me and the crew took the other day's question and counted up all the whale kill possibilities by hand and got this:

10 ways that 1 whale dies
45990 ways that 2 whales die
6717600 ways that 3 whales die
171889200 ways that 4 whales die
1285956000 ways that 5 whales die
3451442400 ways that 6 whales die
3556224000 ways that 7 whales die
1360800000 ways that 8 whales die
163296000 ways that 9 whales die
3628800 ways that 10 whales die.

A little jigglling and an average 6.513215599 of whales buy it, so 3.486784401 whales see the morrow. Honkey was close at 3.5.