Ferries in the Eastern Caribbean are quietly having a moment, and FRS Express des Îles is the reason. The operator runs an international network linking Guadeloupe, Dominica, Martinique and Saint Lucia — with ports at Pointe-à-Pitre, Roseau, Fort-de-France and Castries — plus short hops to two of Guadeloupe's most rewarding satellite islands, Les Saintes and Marie-Galante.
The appeal is the variety packed into close geography. Four neighbouring islands, four different personalities: white-sand beach towns and long Creole lunches on Guadeloupe, rum distilleries and sugarcane country on Marie-Galante, black-sand beaches and volcanic scenery on Martinique, and Dominica's rainforest trails, waterfalls and hot springs. Arriving by sea makes those contrasts obvious in a way a short flight never does.
A sensible route starts in Guadeloupe, which deserves several days on its own. Grande-Terre delivers beach towns like Sainte-Anne and seaside restaurants; Basse-Terre is all mountains, rainforest and waterfalls. From there, tack on a night or two in Les Saintes — Terre-de-Haut's harbour, ringed by green hills and red roofs, is a genuinely lovely place to arrive by boat, and small hotels like Hotel Bois Joli make an overnight easy. Rum fans should prioritise Marie-Galante, where distilleries and quiet beaches fill a few unhurried days.
Then the chain continues south. Dominica is the scenery change: Roseau is your base for hiking, waterfall-hunting and snorkelling a volcanic coastline, and it's worth giving the island several nights rather than a rushed stopover. Martinique next, where Fort-de-France is a jumping-off point either north to black-sand beaches and volcanic country or south to white-sand coves — with distillery visits along the way. The final leg, Saint Lucia, lands you in Castries; if the Pitons and Soufrière are the goal, budget ground time for the drive south on arrival day.
The logistics matter more than on a fly-and-flop trip. Book sailing dates before hotels, since FRS publishes seasonal schedules and not every route runs daily — some longer crossings also include intermediate stops, so check actual arrival times for each leg. Build slack into the itinerary, both between islands and before your flight home, and don't forget a passport: these are international sailings. A two-island trip suits a one-week holiday; with two weeks you can work the whole chain.
For travellers tired of inter-island flights and airport queues, this is the Caribbean done at a slower, better pace — where the crossing itself is part of the holiday. Full route details via Caribbean Journal.