Yeah, I didn't say that... In a highly cinematic moment, the Gunslinger with a high Dexterity and Charisma, dove from the rigging into the giant waves to save Rosie. The waves were rough and the ship was sailing forward, Rosie was getting further away. The halfling bard was trying to throw a rope to them, but was struggling to get it the distance in the wind and waves to help. The Gunslinger kept trying to stay above the waves and make it to Rosie who was growing tired by fighting the waves...
Also, the crew made their group but didn't put skill points originally in swim, climb, profession sailor...they got it at level 2, but at level 1, they had a learning curve. Well, not all of them...a few of them picked skills that would help them.
Later the halfling bard, had been bitten by the rats and spiders in the bilge, was struggling already with penalties to her strength and now constitution...was tossed into the water and encouraged to swim to the coral reef to gather crabs. She did, but grew exhausted in the water and slowly slipped beneath the waves. The halfing swim skill just wasn't enough to overcome all the penalties for strength and then diseases. Was just rough all the way around... But I think they did well, and in the end they got their ship and completed the first book, but it was not a cakewalk.