Does anybody have experience with landing a helicopter on their boat? What are the issues? We are involved in the design of an 80 foot boat with a 20 foot beam but now wonder how we might be able to adapt it to land and hold an AS 355 helicopter. The boat design is a Portuguese bow with a skylounge top deck that affords a landing pad of 20 feet 20 feet. The landing skid is 7.48 feet wide by 11.22 feet. On land the rules are that the landing pad must be 1.5 times the total length of the helo. An As366 is 42.45 feet overall; the main rotor is 35.1 feet in diameter. Maximum weight of the helo would be 5,000 pounds. We notice a number of boats have the tail section overhanging with either bow or stern pads that are not much larger than the landing skids. We really want to keep the size of the boat to a minimum. As we have not started the build we wonder now how to accommodate this helo without compromising wellbeing. The design would have to comply with US and Canadian regulations but at the end of the day we are more concerned with safety and practicality.