Day 1: St. Lucia
Provision in Rodney Bay, a wonderful Caribbean harbor, and eat at the restaurants and try the cocktails at the many sailor bars. Head to nearby Pigeon Island to explore Pigeon Island National Park. The reserve has beautiful beaches, military ruins at Fort Rodney and fantastic views at Signal Peak, where you can sometimes see Martinique.
Sail to Pitons Bay, just on from Soufriere, and hike along the Piton Mitan ridge between Petit Piton and Gros Piton, two volcanic plugs with emerald green peaks that rise from the aquamarine sea. They are the highlight landmarks of St. Lucia and you'll get an amazing view of the bay from the ridge or wonderful photos of these titans from the bay. On the way to Pitons, stop at Anse Cochon for some of the best snorkeling on St. Lucia with its colorful, tropical fish.
Day 3: St Vincent
Clear customs, sail past St. Vincent, stopping for lunch if the mood takes you, and head to Bequia's Admiralty Bay. Find some of the healthiest coral in the Caribbean at the Wall, where you might see turtles, lobster, rays and eels in the deep blue 130ft drop. You'll find it at the southern tip of the island around West Cay. If you love conservation, head to Old Hegg turtle sanctuary which rescues hawksbills.
Day 4: Tobago Cays
Set sail for the wonder of the Tobago Cays Marine Park with its archipelago of five uninhabited islands, amazing coral reef snorkeling, turtles, iguanas and mangroves. Visit the Baradel Turtle Sanctuary, Petit Tabac, where the Pirates of the Caribbean was filmed, and hike the trails on Petit Rameau, Petit Bateau and Jamesby.
Day 5: Mayreau
Sail to one of the best Caribbean diving locations at the coral reef at Mayreau Gardens. Stop off at Salt Whistle Bay, a beautiful anchorage where you can enjoy a beach bbq or a lively beach bar atmosphere. Mayreau is undeveloped and sparsely populated so you can really get the remote island experience..
Day 6: Blue Lagoon Marina
Sail to Blue Lagoon marina on St. Vincent, visit Fort Duvernette "Rock Fort" on the nearby islet next to Young Island. From here you can have a wonderful view of the Grenadines where you'll find awesome snorkeling too.
Day 7: St. Lucia
Set off early for the wonderful harbor of Marigot Bay on St. Lucia where the electric blue sea is flanked by vivid palms right on the beach. Historically it's seen battles between the English and the French navies, but today it's a popular location for the movie industry and has been the setting for Pirates of the Caribbean and the 1967 movie adaptation of Dr. Doolittle. Sail back to Rodney Bay and disembark.