Marine vessel control system for a shallow water anchor

1 . A marine vessel control system operable to be used with a shallow water anchor, the shallow water anchor including a deployable spear to anchor the marine vessel, the marine vessel control system comprising:

a memory; and

a processor coupled to the memory, wherein the processor is configured to:

receive sonar data;

determine a water depth relative to a water bottom based on the sonar data; and

transmit a first command that causes the shallow water anchor to deploy when the water depth is less than a threshold water depth, wherein the threshold water depth corresponds to a maximum depth at which the shallow water anchor's deployable spear is fully extended and penetrates the water bottom,

wherein the processor is further configured to transmit a second command that causes the shallow water anchor's deployable spear to raise in response to receiving a throttle input while the shallow water anchor's deployable spear is deployed.

2 . The marine vessel control system of claim 1 , wherein the first command causes the shallow water anchor's deployable spear to deploy based on the determined water depth.

3 . The marine vessel control system of claim 1 , wherein the processor is integrated with the shallow water anchor.

4 . The marine vessel control system of claim 1 , further including a display in communication with the processor, wherein the processor is further configured to cause the display to present information regarding a status of the shallow water anchor.

5 . The marine vessel control system of claim 1 , wherein the processor is configured to receive data from at least one sensor selected from the group consisting of a global navigation satellite system (GNSS) receiver, a magnetometer, an accelerometer, a sonar system, a gyroscope, and a radar sensor.

6 . The marine vessel control system of claim 5 , wherein the processor is further configured to:

determine a characteristic of the water swell using the data received from the at least one sensor; and

transmit a third command that causes the shallow water anchor's deployable spear to raise or lower based on the determined characteristic of the water swell,

wherein raising or lowering the shallow water anchor's deployable spear based on the determined characteristic of the water swell causes the shallow water anchor's spear to stay in contact with the water bottom.

7 . A marine vessel control system operable to be used with a shallow water anchor and a trolling motor, the shallow water anchor including a deployable spear to anchor the marine vessel, the marine vessel control system comprising:

a memory; and

a processor coupled to the memory, wherein the processor is configured to:

receive a desired position of a marine vessel;

receive sonar data;

based on the sonar data and the desired position of the marine vessel, determine a composition of a water bottom; and

select between the shallow water anchor and the trolling motor based at least in part on the composition of the water bottom,

wherein when the shallow water anchor is selected, the processor is further configured to transmit a first command that causes the shallow water anchor's deployable spear to lower until the spear penetrates the water bottom,

wherein when the trolling motor is selected, the processor is further configured to transmit a second command that causes the motor to maintain the marine vessel at the desired position.

8 . The marine vessel control system of claim 7 , wherein the processor is configured to:

receive data from a global navigation satellite system (GNSS) receiver; and

determine a speed and direction of drift of the marine vessel based on the data.

9 . The marine vessel control system of claim 8 , wherein the processor is configured to transmit the first command to the shallow water anchor that causes the shallow water anchor's deployable spear to lower and the second command to the motor that causes the motor to counteract the determined speed and direction of drift.

10 . The marine vessel control system of claim 9 , wherein the second command to the motor causes the motor to provide propulsion in a direction opposite to the direction of the drift.

11 . The marine vessel control system of claim 7 , wherein the desired position of the marine vessel comprises one of a number of waypoints.

12 . The marine vessel control system of claim 7 , further including a display in communication with the processor, wherein the processor is further configured to cause the display to present information regarding a status of the shallow water anchor.