Does your sailing or yacht club have club handicap pursuit racing? Thats the type of race where each boat has its own start time based on their handicap and all boats should theoretically finish at the same time. Many clubs use this format for "Beer Can" races.
This countdown timer was designed for just this type of race. There are two countdown timers. The first is set for your standard 5 minute start. The second you set for your boats start time (or left at zero for a normal start). When the 5 minute horn sounds, press the "start" button. Once the 5 minute start count finishes, the second timer will automatically start counting down. When that timer reaches zero, its off to the races!
Each timer can be customized to any start increment from 0 to 99 minutes.