Boats have 40 health (20 hearts)

Expected result: Boats would have a small amount of health, comparable to a minecart, armor stand, or farm animal, and the amount would match Java Edition. (According to the wiki boats have just over 4 health, so I am assuming that is what they have on Java.)

Observed result: Boats have 40 health. They take 20 hits to break with the fist, 5 with an unenchanted trident, 8 with a stone axe, and so on. In comparison, minecarts have 6 health, and can be broken in one hit by a stone sword, diamond pickaxe, or crossbow shot.

Steps to reproduce:
1. Place a boat.
2. In survival mode, hit the boat repeatedly until in breaks, counting your hits.
3. The number of hits will be the smallest multiple of (tooltip damage value + 1) that is >= 40. (Note that the fist does 2 damage according to MCPE-10700.)