The difference between a private charter or tour and a boat rental is that there will be no crew or provisions which gives you the freedom to customise your boat trip into your own personal adventure.
Visit the Best Places to Boat in Cayman page for more information on where to boat in Cayman.
While there are plenty of charter companies that offer private boat trips, there is only one company in Cayman that offers boat rentals.
Boats are available for rent by day or multiple days depending on the duration of your trip and activities that you have planned.
Boats can only be rented over multiple days if you are staying at a vacation rental home, villa or condo that has a dock or place to moor the boat safely.