Most aquaculture facilities consist of an enclosure, permeable or impermeable, connected to a floating unit in the waterline. The classical facility is equipped with a permeable net pen and a floating collar as the floating unit. Together these are referred to as cages. The figure below shows a single cage situated in a frame mooring system. In each corner of the frame, buoys are attached providing buoyancy to the frame and ease access to components during maintenance. Technical data of the components are described in the table below.

Component number	Description	Technical data*
1	Inner floating pipe of floating collar	PE100, Ø400, SDR16.7, CIR120m
2	Outer floating pipe of floating collar	PE100, Ø400, SDR16.7
3	Bracket, for positioning of floating pipes	PE100, L0.4m, W0.1m
4	Railing post	PE100, Ø160 SDR11
5	Railing	PE100, Ø140, SDR11
6	Suspension ring for net pen	PE100, Ø250, SDR11
7	Net pen	Sn15.4%
8	Net collector rope	20mm
9	Reinforcement rope	12mm
10	Frame rope	64mm
11	Bridle rope	48mm
12	Mooring rope	64mm
13	Bottom chain	32mm
14	Buoy	L1.0m, W1.0m

Abbreviations: PE=polyethylene, Ø=pipe diameter, SDR=pipe diameter/wall thickness CIR=circumference, Sn=solidity, D=depth, L=length, W=width.