US 12,133,514 B2
Submerged observation unit for a fish tank
Esben Beck, Krackerøy (NO); and Geir Inge Rødseth, Oslo (NO)
Assigned to STINGRAY MARINE SOLUTIONS AS, Oslo (NO)
Appl. No. 17/430,997
Filed by STINGRAY MARINE SOLUTIONS AS, Oslo (NO)
PCT Filed Feb. 11, 2020, PCT No. PCT/NO2020/050032
§ 371(c)(1), (2) Date Aug. 13, 2021,
PCT Pub. No. WO2020/167134, PCT Pub. Date Aug. 20, 2020.
Claims priority of application No. 20190203 (NO), filed on Feb. 13, 2019.
Prior Publication US 2022/0408700 A1, Dec. 29, 2022
Int. Cl. A01K 61/10 (2017.01); A01K 61/60 (2017.01)
CPC A01K 61/60 (2017.01) [A01K 61/10 (2017.01)] 13 Claims
OG exemplary drawing
 
1. An observation system for a fish cage, said observation system comprising a submerged observation unit, a surface cable and a surface buoy comprising a hoist winch, wherein the observation unit is suspended from a node cable from the hoist winch of the surface buoy, wherein
the hoist winch is azimuthally rotatable about a vertical axis and the node cable is torsion-resistant,
the node cable is at its upper end wound on the hoist winch having a horizontal drum axis,
the observation unit is motorized and azimuthally rotatable with the hoist winch about a vertical axis, and
the surface buoy is motorized and movable along a main span of the surface cable, wherein the main span spans across a float ring of the fish cage.