That was what stood out to me, too. 1/8 of the entire navy destroyed by lightning in a five year period.
These ships were routinely completely de-masted and swiss cheesed above the water line in combat and the slightly less swiss cheesed and de-masted winner would wind up towing (until rigging could be refitted and it could sail itself) the loser away as a captured prize to be refitted and recommissioned in one's own navy.