Regatta Countdown Calculator โ€“ Sailing Start Sequence Timer

Run classic 5-4-1-0 or custom start sequences. Visual countdown, flag meanings, and one-tap sync for race starts.

Start sequence

Ready
5:00
Sequence
5-4-1-0
Status
Armed

Flag & signal meanings (classic 5-min)

5:00
Warning
Class flag up + sound. Race about to start.
4:00
Preparatory
P, I, Z, U or Black flag up. Rules in force.
1:00
One-minute
Preparatory flag removed. Final approach.
0:00
Start
Class flag down + gun. Race begins.
Many clubs still use the classic 5-4-1-0 even when the racing rules allow shorter sequences.

How sailors use a regatta timer

Educational sailing helper only. Always follow the Race Committee signals and the Notice of Race. This is not an official race-timing system.

Frequently Asked Questions

What is a regatta countdown? A timer that matches the race committee start sequence so the fleet knows exactly how much time remains before the start gun.

Why 5-4-1-0? It is the most widely used sequence under the Racing Rules of Sailing for many club and championship starts.

Can I run a 10-minute sequence? Yes. Select 10-minute mode for longer preparation periods used in some fleets.

What does Sync do? It realigns the countdown to the next full minute so a late start still matches the committee signals.