I understand that the Caribbean Explorer 2 just completed a major remodeling and that they are offering a special itinerary in June out of St. Kitts to Redonda and Montserrat, see link below.
They will also spend time diving Saba before returning to St. Maarten, I don't know the cost.
Discover Redonda and Montserrat with ScubaRadio - Explorer Ventures
They will also spend time diving Saba before returning to St. Maarten, I don't know the cost.
Discover Redonda and Montserrat with ScubaRadio - Explorer Ventures