There are ferries from Marigot to Blowing Point, Anguilla that leave every 45 minutes from 7AM until 7PM. There are several of them and the larger ones are more comfortable, but it is only about a half hour ride across the three mile wide channel, Both sides has a departure tax. The French side accepts euros, dollars, and more. The ferry costs $15 per head, one way. Don't buy a round trip as it will tie you to that ferry and its return schedule. It's quite easy to go over in the morning, grab a cab at the ferry dock, and travel to anyplace on the island for about $20.
St Barths is another daytrip, albeit a bit longer, about 15 miles through some pretty choppy water. There are sailboats that take about three hours, so most of your day will be consumed by sailing on the bounding main, with a bit of time for lunch and shopping in Gustavia, the capital of St Barths. The powered cats get over there in about an hour and a half from Marigot and cost $70 round trip on the same day and a bit over $90 round trip on different days. Add in departure taxes. You might be able to get two for one coupons someplace. The Voyager leaves from Marigot and Oyster Pond. The Oyster Pond run takes about half as long. The ferry from Philipsburg is a bit quicker, as you start a few miles closer.
Saba is another daytrip, if done by plane. The 26 miles across the channel are the roughest in the area. There is a ferry but most of the day would be spent travelling over and back.
Ofcourse, you can just go sailing
or charter a boat
. Check out our advertisers in the different categories below.