SeaRacing - Watercraft Tester

"SeaRacing" is a tool app that measures acceleration performance of Watercraft, Powerboat, etc.
You can easily measure times such as 0-100 km/h and 0-400 m by simply accelerating from under 7mph. Measurements will be repeated automatically.
It is difficult to accelerate from a stopped position on watercraft, and it is impossible to detect the start on choppy water, so the measurement begins with acceleration from less than 12 km/h and the time is calculated.
Please use it with safety first.

(How to use)
1. Bring your device (iPhone / iPad with GPS) and get on your watercraft.
2. Tap "Start" button. It's ok to be tapped before getting on the watercraft. If the device isn’t capturing GPS signal, “GPS / in Prep" is displayed, and if the device is capturing GPS signal and the watercraft is moving, “Less than 7 mph (or 12 km/h) / for 5 seconds / Slow down" is displayed. (If the device isn’t capturing GPS signal, "GPS" mark to the left of the SeaRacing logo shows in thin gray.)
3. When the watercraft slows down less than 7 mph and keeps for 5 seconds, “Accelerate at your timing / Ready" Is displayed and an audible double alarm will sound at the same time, then accelerate the watercraft at your own timing. If the watercraft accelerated, "Measurement Started" is displayed and an audible alarm will sound and a timer will start. The screen frame turns green during measurement.
4. If the watercraft decelerate, the measurement will finish and "Finished" will be displayed.
5. Measurements will be repeated until “Stop" button is tapped.

(Button function)
Stop: The measurement will stop.
Start: Measurements will start and will repeat until Stop button is tapped.
share: A dialog opens to share the displayed result.
▲newer: After displaying the past result with ▼older button, tap this button to return to the newer results.
▼older: Displays past results from the stored history.
km/h / mph: Selects the unit of speed
↑ / ↓: Page scroll. These buttons are enable when there are other results behind while viewing history.

(Measurement items)
km/h: From 0-20 km/h to unlimited every 20 km/h. 0-200 m. 0-400 m. Max speed.
mph: From 0-10 mph to unlimited every 10 mph. 0-1/8 mile. 0-1/4 mile. Max speed.

(Large speed display on the screen)
When in the stopped state (when "Start" button is not tapped), tap the "Stop" button twice to turn it on and off.

(Note)
- 1000 cases of measurement history are stored.
- When you uninstall SeaRacing, the stored measurement history will be deleted.
- No advertisement in the app.
- SeaRacing does not work on iPads without GPS.
- If the GPS signal is weak, the operation may become unstable.
- The developer assumes no responsibility for any accident, violation, loss or claims by third parties which may arise from the use of this app.