Here’s a new way to enjoy a charter vacation: Take a one-way charter down the Windward Islands from St. Lucia to Grenada, enjoying the wind at your back and exploring a handful of smaller islands along the way. The Windwards are at the southeastern border of the Caribbean, with basically a north to south layout. They got their name because they were more to windward for sailing ships arriving in the New World many centuries ago than the Leeward Islands, farther north and west. The currents and winds that provide the fastest sailing lanes across the Atlantic usually led to…