Today, I'd most definitely take along all of Julien Gracq. Why Gracq, that'd be the subject of a whole essay : for the same reasons I carried Proust the first time I crossed an ocean.
An ocean is not a sea, it breathes, it has a long rhythmic swell. And when you read, you want something that will carry you along the same ryhthm. And that is why Proust. And why Gracq, this prodigious creator, this perfectionist, who will polish each word till perfection; the subject of his novels is the language itself; litterature honed to perfection. Just right for an ocean passage.

There were, just like you, three of us. Getting into the watch rhythm was not easy at the beginning, and we would have hated having to steer : star gazing, reading, having a cup of tea, watching the boat ploughing through the waves, trimming the sails are more fun.

We started in the Mediterranean and arrived in the Carribean, stopping over in Gibraltar, Madeira and the Canaries. Took us maybe 3 weeks, I can't remember. This is one of the most treasured voyage I have taken.