Most submariners who've deployed on SSNs in the Pacific have pulled into Yokosuka. I imagine almost everyone who spends some time in Japan thinks about trying to climb Mt. Fuji when they're there -- then they discover that there's really only about a 2 month window when people take the hike. Plus, it's normally an all-day affair.
Submariners stationed in Japan, though, can climb Mt. Fuji at their leisure. Most, I'm sure, would want to make the climb once. Any more times than that would take real dedication.
That's why I'm so impressed with some of the guys from Submarine Group SEVEN who are proposing to climb Mt. Fuji not once, but four times -- in one day! Here's their web site that explains when they're doing it (Sept. 1st, 2008), why they're doing it (for charity), and how you can contribute. A couple of them made the climb 3 times in one day last year, and in true submariner spirit recognized that they could get even more work done in a day. Good luck, guys!