Tactical Compass

In tactical compass mode the "Compass" and "VMG" mode indicators are displayed simultaneously.

When the SC-1 is in Tactical Compass mode it displays your heading relative the wind direction stored on the SC-1. When it is correctly configured, the tactical compass will show you the same numbers at equivalent angles on both tacks.

This makes wind shifts easy to identify. If you're trimming by your telltales and you start seeing smaller numbers on the tactical compass display you know that you have been lifted, regardless of which tack you are on.

Once you have identified a wind shift using the SC-1's tactical compass mode, you can adjust the reference wind direction to account for the shift without leaving the tactical compass mode. Both the process of setting the reference wind direction and the process of identifying and adjusting to wind shifts are outlined below.