Undersea compass and pitch indicator

A method of underwater navigation with a maritime vehicle, the method comprising:

• receiving, by a processor coupled to a memory storing instructions executed by the processor, navigation information of the maritime vehicle from a plurality of sensors sensing navigation information;
• determining, by the processor, rotational orientation information of the maritime vehicle based on sensed navigation information;
• associating, by the processor, the rotational orientation information with navigation information displayed by a plurality of navigation indicators;
• converting, by the processor, the navigation information into graphics data;
• and
• providing, by the processor, the graphics data to a graphics processing unit to render a navigation board image on a display coupled to the graphics processing unit, wherein the navigation board image comprises:
• the plurality of navigation indicators to indicate the navigation information, and
• a compass comprising a plurality of rotational orientation indicators to indicate rotational orientation information, wherein the rotational orientation information comprises pitch information that indicates an ascent rate and a descent rate;
• and
• changing, by the processor, a color of the plurality of rotation orientation indicators based on:
• at least one of the ascent rate and the descent rate is greater than or equal to a threshold;
• and a underwater depth level of the maritime vehicle.

An underwater navigation system for use with a diver undersea navigation device comprising:

• a plurality of sensors configured to sense navigation information;
• a display;
• a graphics processing unit coupled to the display;
• a processor coupled to the graphics processing unit and the plurality of sensors, wherein the processor is configured to control the plurality of sensors;
• and
• a memory coupled to the processor, the memory storing instructions executable by the processor to:
• receive the navigation information from the plurality of sensors;
• convert the navigation information into graphics data;
• and
• provide the graphics data to the graphics processing unit to render a navigation board image on the display, wherein the navigation board image comprises:
• a compass comprising a plurality of heading direction indicators, a current heading indicator, and a plurality of pitch indicators, wherein the plurality of pitch indicators indicate pitch information that indicates an ascent rate and a descent rate;
• a plurality of bearing indicators configured to display an intended bearing and an actual bearing of the diver;
• and
• a plurality of navigation indicators configured to display navigation information;
• and
• change a color of the plurality of pitch indicators based on:
• at least one of the ascent rate and the descent rate equaling or exceeding a threshold;
• and a underwater depth level of a user of the underwater navigation system.