Systems and methods to locate seismic data acquisition units

1. A system to locate seismic data acquisition units in a marine environment, comprising:

a first seismic data acquisition unit comprising:

a case having a wall defining an internal compartment;

a power source, a clock, a seismic data recorder, and at least one geophone disposed within the case;

a cleat ring comprising a ring of cleats and positioned on a perimeter of a first side of the first seismic data acquisition unit to couple, in a stack, the first seismic data acquisition unit with a second seismic data acquisition unit;

a rope having a first end coupled to a first portion of the first seismic data acquisition unit and a second end coupled to a second portion of the first seismic data acquisition unit;

a cavity formed by the cleat ring on the first side of the first seismic data acquisition unit;

a telltale component to indicate a position of the seismic data acquisition units and coupled to a portion of the rope, the telltale component including at least one of a transmitter, beacon, radio frequency identifier, near field communications, and light; and

the rope and the telltale component stored in the cavity of the first seismic data acquisition unit, wherein the second seismic data acquisition unit is coupled with the first seismic data acquisition unit via the cleat ring on the perimeter of the first side to form the stack.

2. The system of claim 1 , wherein the first end is coupled to the wall of the first seismic data acquisition unit outside the perimeter formed by the cleat ring, and the second end is coupled to the wall of the first seismic data acquisition unit outside the perimeter formed by the cleat ring.

3. The system of claim 1 , wherein the first end coupled to the first portion of the first seismic data acquisition unit within the perimeter formed by the cleat ring, and the second end coupled to the second portion of the first seismic data acquisition unit within the perimeter formed by the cleat ring forms a hoop.

4. The system of claim 1 , comprising:

the telltale component comprising an acoustic beacon;

the acoustic beacon configured to disable acoustic transmission when the telltale component is stored in the cavity formed by the cleat ring on the first side.

5. The system of claim 1 , comprising;

the telltale component comprising an optical beacon;

the optical beacon configured to initiate optical transmission responsive to the telltale component being removed from the cavity formed by the cleat ring on the first side or responsive to removal of the second seismic data acquisition unit from the stack.

6. The system of claim 1 , comprising:

a wireless module that transmits status information for the first seismic data acquisition unit.

7. The system of claim 1 , comprising:

the rope comprising a flat rope.

8. The system of claim 1 , comprising:

a second telltale component coupled to the rope.

9. A method to locate seismic data acquisition units in a marine environment, comprising:

providing a first seismic data acquisition unit comprising:

a case having a wall defining an internal compartment;

a power source, a clock, a seismic data recorder, and at least one geophone disposed within the case;

a cleat ring comprising a ring of cleats and positioned on a perimeter of a first side of the first seismic data acquisition unit to couple, in a stack, the first seismic data acquisition unit with a second seismic data acquisition unit;

a cavity formed by the cleat ring on the first side of the first seismic data acquisition unit;

providing a rope having a first end coupled to a first portion to the first seismic data acquisition unit and a second end coupled to a second portion of the first seismic data acquisition unit;

providing a telltale component configured to indicate a position of the seismic data acquisition units and coupled to a portion of the rope, the telltale component including at least one of a transmitter, beacon, radio frequency identifier, near field communications, and light, wherein the rope and the telltale component are stored in the cavity of the first seismic data acquisition unit, wherein the second seismic data acquisition unit is coupled with the first seismic data acquisition unit via the cleat ring on the perimeter of the first side to form the stack.

10. The method of claim 9 , comprising:

coupling the first end to the first portion of the first seismic data acquisition unit within the perimeter formed by the cleat ring; and

coupling the second end to the second portion of the first seismic data acquisition unit within the perimeter formed by the cleat ring to form a hoop.

11. The method of claim 10 , comprising:

moving an underwater vehicle comprising an arm towards the hoop;

moving the arm within a perimeter of the hoop;

moving, by the underwater vehicle, the first seismic data acquisition unit via the hoop.

12. The method of claim 9 , comprising:

detecting, by an underwater vehicle, the first seismic data acquisition unit via an acoustic beacon from the telltale component.

13. The method of claim 9 , comprising:

detecting, by an underwater vehicle, the first seismic data acquisition unit via an optical beacon from the telltale component.

14. The method of claim 9 , comprising:

transmitting, by a wireless module, status information for the first seismic data acquisition unit.

15. The method of claim 9 , comprising:

coupling a second telltale component to the rope.

16. A system to locate seismic data acquisition units in a marine environment, comprising:

a first seismic data acquisition unit comprising:

a case having a wall defining an internal compartment;

a power source, a clock, a seismic data recorder, and at least one geophone disposed within the case;

a cleat ring comprising a ring of cleats and positioned on a perimeter of a first side of the first seismic data acquisition unit to couple, in a stack, the first seismic data acquisition unit with a second seismic data acquisition unit;

a rope having a first end coupled to a first portion of the first seismic data acquisition unit;

a cavity formed by the cleat ring on the first side of the first seismic data acquisition unit;

a telltale component to indicate a position of the seismic data acquisition units and coupled to a portion of the rope, the telltale component including at least one of a transmitter, beacon, radio frequency identifier, near field communications, and light; and

the rope and the telltale component stored in the cavity of the first seismic data acquisition unit, wherein the second seismic data acquisition unit is coupled with the first seismic data acquisition unit via the cleat ring on the perimeter of the first side to form the stack.

17. The system of claim 16 , wherein the first end is coupled to the wall of the first seismic data acquisition unit outside the perimeter formed by the cleat ring.

18. The system of claim 16 , comprising:

the telltale component comprising an acoustic beacon;

the acoustic beacon configured to disable acoustic transmission when the telltale component is stored in the cavity formed by the cleat ring on the first side.

19. The system of claim 16 , comprising;

the telltale component comprising an optical beacon;

the optical beacon configured to initiate optical transmission responsive to the telltale component being removed from the cavity formed by the cleat ring on the first side or responsive to removal of the second seismic data acquisition unit from the stack.

20. The system of claim 16 , comprising:

a wireless module that transmits status information for the first seismic data acquisition unit.