SYSTEMS AND METHODS FOR AN HEADS UP DISPLAY FOR USE WITH AN UNDERWATER HANDHELD COMPUTER

1 . An underwater handheld computer system comprising:

a display;

at least one hardware processor; and

one or more software modules are configured to, when executed by the at least one hardware processor,

receive a selection of a mission marker;

display on a display a diver's position, heading, depth and course history for the selected mission marker; and

interface with a heads up display to mirror the data displayed on the display.

2 . The system of claim 1 , wherein the underwater handheld computer further comprises a multibeam imaging sonar that uses a 12 degree aperture on a 750 k frequency band to improve the resolution and clarity of a sonar image displayed on the display, using a narrow beam width that allows for more precise targeting and detection of objects.

3 . The system of claim 1 , wherein the underwater handheld computer is configured to receive a selection of a mission marker and display a diver's position, heading, depth and course history for the selected mission marker.

4 . The system of claim 1 , wherein the underwater handheld computer comprises a sonar display comprising a plurality of sonar color palettes.

5 . The system of claim 1 , wherein the underwater handheld computer is further configured to:

display the diver's position and speed over ground;

the height of the diver above the seabed;

pressure sensor data; and

water column depth.

6 . The system of claim 4 , wherein the underwater handheld computer is further configured to enhance the visualization of data displayed using the plurality of sonar color palettes.

7 . The system of claim 6 , wherein the color palettes are used to highlight different features of a displayed sonar image, making it easier to identify and interpret.

8 . The system of claim 6 , wherein the underwater handheld computer is further configured to use the plurality of color palettes to help the user to distinguish between different types of underwater objects, such as rocks, coral, and manmade objects, which have different acoustic properties that are reflected in the sonar image.

9 . The system of claim 6 , wherein the underwater handheld computer is further configured to display last known date, time, location of a magnetic heading calibration, and the diver's depth.

10 . The system of claim 1 , wherein the underwater handheld computer is further configured to display a pinger locator feature.

11 . The system of claim 1 , further comprising a bezel made of Beryllium Copper (BeCu) to reduce the magnetic signature.

12 . The system of claim 1 , further comprising a 300 Wh Lithium Ion battery pod or a 97 Wh Lithium Ion battery pod, and a Lithium Ion battery charger.