"You flatter me, Malia," Killian chuckled, since aren't horrible at all was quite the compliment, no? "The boat holds me, aye. She's held up to four people - I think that might be the limit, before capsizing." Four normal-sized adults, that is - if anyone had been hitting the cheeseburgers too hard there might be problems, but anyway. He was quite proud of his handmade accomplishment - it was just that he couldn't imagine being stuck in a place without some source of water, even if it wasn't the majesty of the ocean.
As for why he didn't live out on it, he lifted a shoulder in a shrug, letting her examine the Ice Queen, and he fondly gave the vessel a pat with his good hand too. "I'd need a houseboat, but it's perhaps a project for later - I'd have to see if my lover would go for it, he might not." They'd probably be stuck here long enough to build something, was the harrowing thought.
"It's good you've got people with you. Complete isolation can lead to dark things, but then again, we all need our space sometimes. To recharge. It's a balance."