Yes, the ship slows down automatically for safety reasons.
In answer to Chjargal's weapon, a flaming ballista bolt fires from the deck of the approaching craft. It blazes a trail through the sky and misses the moray ship by fifty feet. You can see human men gathered around the ballista, busy preparing for a second shot.
As they close, you can see close to thirty men on deck, clanging weapons to shields. The drakkar is moving faster than the moray, so escape is not an option.
Hector shouts in your direction, "If you've any skill with the catapults, return fire! I'll tell the men to prepare to be boarded."