“If I remember right, the Japanese intended to beach it and use it as artillery.”
Yeah, I think it was a case of not enough fuel to get back to Japan.
That was the Yamato on its way to Okinawa.
That was the Musashi’s sister ship Yamato. She was essentially sent on a naval Kamikaze mission She carried only enough fuel to reach Okinawa in late 1944. She was also sunk by our aircraft before she even got close.