It’s hard to start a race without a Race Committee Boat — the boat that contains the race officials who manage a race. Typically, attention, penalty, preparatory, recall, start, warning, and sequence sounds and flags originate from the race committee boat. The race committee boat also displays flags providing details about the course to be sailed, such as the number of legs and whether offset marks or gates are in use. The RC boat may also display other flags that indicate modifications to the races or rules listed in the Sailing Instructions. The RC boat may also display a placard showing bearing and distance to the first mark, and, optionally, the number of legs to be sailed. Also referred to as the committee boat, RC boat or signal boat. Compare to: mark boat.