Use of time-depth recorders to determine fishing depth of commercial setnets and inform management in Cook Inlet, Alaska

Table 1 Summary of TDR deployment on Cook Inlet setnets, 2015

Site	Mesh	Net	TDR	Net construction			Days fished
Site	Mesh	Net	TDR	Mesh size (in.)	Material	Length (ft.)	N	First	Last
Site A	29	1^a	13,904	5	Monofilament	210	11	09-Jul	30-Jul
		2	13,908	5.125	Monofilament	210	11	09-Jul	30-Jul
		3	13,893	UN	UN	UN	4	09-Jul	26-Jul
		4	13,895	UN	UN	UN	11	09-Jul	01-Aug
	45	1^a	13,889	5	Multistrand	210	11	09-Jul	30-Jul
		2	13,890	5.25	Multistrand	210	11	09-Jul	30-Jul
		3	13,891	5.25	Multistrand	210	11	09-Jul	30-Jul
Site B	29	1	13,842	5	Monofilament	210	11	02-Jul	20-Jul
		2	13,847	5	Monofilament	210	6	06-Jul	18-Jul
		3	13,866	5	Multistrand	150	20	04-Jul	10-Aug
	36	1	13,874	5	Multistrand	150	19	02-Jul	06-Aug

Sites A and B are mapped in Fig. 1. Mesh refers to the number of ~5″ (~13 cm) square meshes that determine the depth of the net. TDR: serial number of the time-depth recorder (used to select the net to view on the animator)
in. inches, ft. feet, UN unknown, N number (1 inch = 2.54 cm; 210 feet ≈ 64 m)
^aThese nets were equipped with additional depth recorders on the breastline at ¼, ½, and ¾ of the depth of the net, as well as on the center of the leadline

ISSN: 2050-3385