After a phone call to the "Official Heineken Spectator Boat", I have found out that it is a charter catamaran called Golden Eagle, operating in SXM, which will have 65-70 passengers, so not much different from Tango and Lambada. Now, No.1SXM is a fast catamaran, which appeals to me and it follows the race from start to finish. We're just not sure if we want to be out there for 7 hours. On the other hand No 1 SXM offers a sunset cruise which sounds wonderful and it picks us up in Simpson Bay, will book this tomorrow.
So we are booked on the Tango, which picks us up right at our resort. Should be fun.
Thanks to all for your help.