Not much probably. Practically al fishermen's fleet was wipped and aquaculture where also damaged. Luckily, most yellowtail production was sold in the winter market a few weeks before, so seafarmers have enough money in the bank to start again.

Most whalers were probably offshore when the tsunami striked thus not so damaged. I'll bet that this $30M where for families that lost their relatives or houses, instead to buy better whalers, but i'm just guessing...