Select to open the apps list. Select Settings > Marine.

Appearance

Sets the appearance of marine navigation aids on the map.

Marine Alarm Setup

Sets alarms for when you exceed a specified drift distance while anchored, when you are off course by a specified distance, and when you enter water of a specific depth (Setting Up Marine Alarms).

Marine Speed Filter

Averages the speed of your vessel over a short period of time for smoother speed values.