Nevermind now the blunt fact the oared ships, entirely independent of the wind as they now are, can literally run rings around the weather-dependent sailing roundships. Those big Celtic ships might actually be quite a daunting prospect for most galley types to board, but even the little ones ought to have fairly little trouble ramming their waterlines full of holes...
There's good reasons it took a while even after the introduction of cannon that the roundships reached even true parity with the oared types in the Med - and coastal galleys gave British line ships no end of pain in the Baltic archipelagoes as late as Napoleonic times.
Bookmarks