I'm thinking of the worst case though. Either losing the first galley and quitting with 0 damage, or losing 2 galleys would be terrible, even if it's only 30 percent of one of these. And in that case we basically lose all ability to have boats in the water anywhere.
The alternative, doing nothing and building a galley means at worst we have a stack of 3 galleys that can still transport units. Attacking with a carrack at any time would be a problem for him because we'd get the coast bonus instead of him, and we'd be able to counterattack.
I think the most likely outcome (~60%) is just good, not great, killing a 60 hammer unit for a 50 hammer one, and a net negative for both of us. And to me, after considering it I don't think the good outcome or the great one (10% of winning) balances for how bad the worst case is.
The alternative, doing nothing and building a galley means at worst we have a stack of 3 galleys that can still transport units. Attacking with a carrack at any time would be a problem for him because we'd get the coast bonus instead of him, and we'd be able to counterattack.
I think the most likely outcome (~60%) is just good, not great, killing a 60 hammer unit for a 50 hammer one, and a net negative for both of us. And to me, after considering it I don't think the good outcome or the great one (10% of winning) balances for how bad the worst case is.