You can check the up to date in real time availability of a sail by clicking the book sail button above. Choose whether you want a private sail or public sail. Then pick which sail you are interested in and a calendar will pop up showing the availability of the sail. If the date is highlighted in green it means there is availability for that sail. All sails have a maximum passenger count of six. Availability on a public sail will continue to show until the maximum passenger count is met.