Gjerdinga

Site 12714 · Nærøysund municipality · Production area 7, Nord-Trøndelag med Bindal

Near the lice limit, week 39Operated by Sinkaberg Havbruk AS · group unknown

0.48Adult female lice per fishLimit 0.50 · near the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

9Lice treatments in 2026Latest: Mechanical delousing, week 39, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Active disease casesNone recordedRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

23Wellboat visits in 2026by 2 different vessels · latest 01 Sep 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

0Escapes reportedNone reportedSince 2006 · Directorate of Fisheries · updated 01 Oct 2026

Sea lice against the limit

Weekly average of adult female lice per fish, as reported by the company. For this site the limit is 0.2 in weeks 16–21 and 0.5 for the rest of the year. Hatched weeks have no count and count neither as above nor below.

2026

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.01	0.5	Below the limit
2	0.01	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.01	0.5	Below the limit
6	0.01	0.5	Below the limit
7	0.02	0.5	Below the limit
8	0.03	0.5	Below the limit
9	0.04	0.5	Below the limit
10	0.04	0.5	Below the limit
11	0.05	0.5	Below the limit
12	0.05	0.5	Below the limit
13	0.05	0.5	Below the limit
14	0.05	0.5	Below the limit
15	0.05	0.5	Below the limit
16	0.05	0.2	Below the limit
17	0.04	0.2	Below the limit
18	0.04	0.2	Below the limit
19	0.06	0.2	Below the limit
20	0.09	0.2	Below the limit
21	0.12	0.2	Below the limit
22	0.14	0.5	Below the limit
23	0.16	0.5	Below the limit
24	0.17	0.5	Below the limit
25	0.18	0.5	Below the limit
26	0.19	0.5	Below the limit
27	0.31	0.5	Below the limit
28	0.15	0.5	Below the limit
29	0.14	0.5	Below the limit
30	0.14	0.5	Below the limit
31	0.27	0.5	Below the limit
32	0.44	0.5	Near the limit
33	0.44	0.5	Near the limit
34	0.44	0.5	Near the limit
35	0.33	0.5	Below the limit
36	0.21	0.5	Below the limit
37	0.23	0.5	Below the limit
38	0.33	0.5	Below the limit
39	0.48	0.5	Near the limit

Earlier years

20253 of 34 weeks with a count above the limit

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.08	0.5	Below the limit
2	0.13	0.5	Below the limit
3	0.12	0.5	Below the limit
4	0.11	0.5	Below the limit
5	0.12	0.5	Below the limit
6	0.15	0.5	Below the limit
7	0.14	0.5	Below the limit
8	0.14	0.5	Below the limit
9	0.15	0.5	Below the limit
10	0.18	0.5	Below the limit
11	0.22	0.5	Below the limit
12	0.27	0.5	Below the limit
13	0.34	0.5	Below the limit
14	0.37	0.5	Below the limit
15	0.49	0.5	Near the limit
16	0.51	0.2	Above the limit
17	0.65	0.2	Above the limit
18	0.23	0.2	Above the limit
19	0.18	0.2	Near the limit
20	0.17	0.2	Near the limit
21	0.12	0.2	Below the limit
22	0.12	0.5	Below the limit
23	0.12	0.5	Below the limit
24	0.13	0.5	Below the limit
25	0.14	0.5	Below the limit
26	0.15	0.5	Below the limit
27	0.19	0.5	Below the limit
28	0.26	0.5	Below the limit
29	0.29	0.5	Below the limit
30	0.27	0.5	Below the limit
31	unknown	0.5	Not reported
32	unknown	0.5	Not reported
33	unknown	0.5	Not reported
34	unknown	0.5	Not reported
35	unknown	0.5	Not reported
36	unknown	0.5	Not reported
37	unknown	0.5	Not reported
38	unknown	0.5	Not reported
39	unknown	0.5	Not reported
40	unknown	0.5	Not reported
41	unknown	0.5	Not reported
42	unknown	0.5	Not reported
43	unknown	0.5	Not reported
44	unknown	0.5	Not reported
45	unknown	0.5	Not reported
46	unknown	0.5	Not reported
47	unknown	0.5	Not reported
48	unknown	0.5	Not reported
49	0.00	0.5	Below the limit
50	0.00	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.01	0.5	Below the limit

20242 of 52 weeks with a count above the limit

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.00	0.5	Below the limit
2	0.00	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.00	0.5	Below the limit
5	0.00	0.5	Below the limit
6	0.00	0.5	Below the limit
7	0.00	0.5	Below the limit
8	0.00	0.5	Below the limit
9	0.00	0.5	Below the limit
10	0.00	0.5	Below the limit
11	0.00	0.5	Below the limit
12	0.00	0.5	Below the limit
13	0.00	0.5	Below the limit
14	0.01	0.5	Below the limit
15	0.01	0.5	Below the limit
16	0.01	0.2	Below the limit
17	0.01	0.2	Below the limit
18	0.01	0.2	Below the limit
19	0.01	0.2	Below the limit
20	0.01	0.2	Below the limit
21	0.02	0.2	Below the limit
22	0.00	0.5	Below the limit
23	0.02	0.5	Below the limit
24	0.00	0.5	Below the limit
25	0.00	0.5	Below the limit
26	0.04	0.5	Below the limit
27	0.00	0.5	Below the limit
28	0.04	0.5	Below the limit
29	0.04	0.5	Below the limit
30	0.05	0.5	Below the limit
31	0.06	0.5	Below the limit
32	0.08	0.5	Below the limit
33	0.10	0.5	Below the limit
34	0.14	0.5	Below the limit
35	0.14	0.5	Below the limit
36	0.22	0.5	Below the limit
37	0.31	0.5	Below the limit
38	0.44	0.5	Near the limit
39	0.67	0.5	Above the limit
40	0.46	0.5	Near the limit
41	0.49	0.5	Near the limit
42	0.41	0.5	Near the limit
43	0.31	0.5	Below the limit
44	0.48	0.5	Near the limit
45	0.70	0.5	Above the limit
46	0.44	0.5	Near the limit
47	0.41	0.5	Near the limit
48	0.25	0.5	Below the limit
49	0.20	0.5	Below the limit
50	0.17	0.5	Below the limit
51	0.12	0.5	Below the limit
52	0.14	0.5	Below the limit

20230 of 4 weeks with a count above the limit (data from week 40)

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	unknown	0.5	Not reported
41	unknown	0.5	Not reported
42	unknown	0.5	Not reported
43	unknown	0.5	Not reported
44	unknown	0.5	Not reported
45	unknown	0.5	Not reported
46	unknown	0.5	Not reported
47	unknown	0.5	Not reported
48	unknown	0.5	Not reported
49	0.00	0.5	Below the limit
50	0.00	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.00	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 39, 2026
Mechanical delousing1 pen
Week 38, 2026
Mechanical delousing5 pens
Week 36, 2026
Mechanical delousing2 pens
Week 35, 2026
Mechanical delousing7 pens

Show all 16

Week 33, 2026
Mechanical delousing2 pens
Week 32, 2026
Mechanical delousing1 pen
Week 31, 2026
Mechanical delousing3 pens
Week 29, 2026
Medicinal bathDeltamethrin
Week 27, 2026
Medicinal bathDeltamethrin
Week 20, 2025
Mechanical delousing1 pen
Week 19, 2025
Mechanical delousing2 pens
Week 18, 2025
Mechanical delousing2 pens
Week 48, 2024
Thermal delousing1 pen
Week 46, 2024
Mechanical delousing2 pens
Week 42, 2024
Mechanical delousing2 pens
Week 40, 2024
Mechanical delousing3 pens

Disease

Norwegian Food Safety Authority

No cases in the Food Safety Authority's register of notifiable diseases (since 26 Nov 2024).

Escapes

Directorate of Fisheries

No escapes reported from this site since 2006.

Wellboat visits

23 visits in 2026

Visits are derived by us from the Coastal Administration's AIS positions: a fish carrier stationary within 500 metres of the farm for at least 30 minutes. The AIS archive lags about 17 days. A visit is not proof of infection.

Arrival	Vessel	Previous farm (14 days)	Duration
01 Sep 2026	Ronja Naeroeysund	Årnes	7 h 5 min
31 Aug 2026	Ronja Naeroeysund	Årnes	6 h 21 min
30 Aug 2026	Ronja Naeroeysund	Årnes	6 h 46 min
29 Aug 2026	Ronja Naeroeysund	Årnes	6 h 10 min
28 Aug 2026	Ronja Naeroeysund	Årnes	6 h 22 min
27 Aug 2026	Ronja Naeroeysund	Årnes	6 h 48 min
26 Aug 2026	Ronja Naeroeysund	Årnes	7 h 31 min
25 Aug 2026	Ronja Naeroeysund	Årnes	6 h 8 min
24 Aug 2026	Ronja Naeroeysund	Årnes	7 h 8 min
14 Jul 2026	Ronja Naeroeysund	Lille Kvitholmen	1 h 19 min
14 Jul 2026	Ronja Naeroeysund	Lille Kvitholmen	2 h 4 min
13 Jul 2026	Ronja Naeroeysund	Lille Kvitholmen	1 h 10 min

Show 47 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
13 Jul 2026	Ronja Naeroeysund	Lille Kvitholmen	2 h 6 min
12 Jul 2026	Ronja Naeroeysund	Lille Kvitholmen	2 h 18 min
03 Jul 2026	Ronja Naeroeysund	Ternskjæret II	1 h 34 min
03 Jul 2026	Ronja Naeroeysund	Ternskjæret II	2 h 22 min
02 Jul 2026	Ronja Naeroeysund	Ternskjæret II	1 h 30 min
02 Jul 2026	Ronja Naeroeysund	Ternskjæret II	2 h 9 min
01 Jul 2026	Ronja Naeroeysund	Ternskjæret II	1 h 33 min
01 Jul 2026	Ronja Naeroeysund	Ternskjæret II	3 h 46 min
26 Apr 2026	Viknatrans	Lille Kvitholmen	6 h 47 min
25 Apr 2026	Viknatrans	Lille Kvitholmen	6 h 38 min
24 Apr 2026	Viknatrans	Lille Kvitholmen	2 h 20 min
05 Dec 2025	Ronja Vita	Hellerflesa	4 h 57 min
04 Dec 2025	Ronja Vita	Hellerflesa	4 h 6 min
03 Dec 2025	Ronja Vita	Hellerflesa	4 h 0 min
12 Aug 2025	Ronja Ocean	Marøya	1 h 42 min
11 Aug 2025	Ronja Ocean	Marøya	1 h 33 min
09 Aug 2025	Ronja Ocean	Marøya	2 h 39 min
08 Aug 2025	Ronja Ocean	Marøya	1 h 36 min
07 Aug 2025	Ronja Ocean	Marøya	1 h 58 min
06 Aug 2025	Ronja Ocean	Marøya	1 h 30 min
05 Aug 2025	Ronja Ocean	Marøya	1 h 42 min
04 Aug 2025	Ronja Ocean	Marøya	2 h 59 min
02 Aug 2025	Ronja Ocean	Marøya	5 h 41 min
16 May 2025	Ronja Naeroeysund	no other farm	7 h 33 min
05 May 2025	Ronja Naeroeysund	Kråkøya	7 h 0 min
02 May 2025	Ronja Naeroeysund	Kråkøya	11 h 45 min
25 Apr 2025	Ronja Naeroeysund	Kråkøya	1 h 54 min
08 Apr 2025	Ronja Naeroeysund	Marøya	1 h 36 min
07 Apr 2025	Ronja Naeroeysund	Marøya	2 h 44 min
06 Apr 2025	Ronja Naeroeysund	Marøya	2 h 8 min
25 Mar 2025	Ronja Ocean	Marøya	1 h 35 min
25 Mar 2025	Ronja Ocean	Båfjordstranda	3 h 4 min
21 Mar 2025	Ronja Explorer	Marøya	2 h 43 min
11 Jan 2025	Ronja Explorer	Marøya	2 h 7 min
11 Jan 2025	Ronja Ocean	Marøya	1 h 39 min
05 Jan 2025	Ronja Ocean	Marøya	2 h 3 min
27 Nov 2024	Ronja Ocean	Båfjordstranda	6 h 19 min
25 Nov 2024	Ronja Ocean	Båfjordstranda	4 h 10 min
14 Nov 2024	Ronja Naeroeysund	Klungset	7 h 21 min
12 Nov 2024	Ronja Naeroeysund	Klungset	6 h 6 min
15 Oct 2024	Ronja Naeroeysund	Klungset	8 h 5 min
14 Oct 2024	Ronja Naeroeysund	Klungset	8 h 17 min
03 Oct 2024	Ronja Naeroeysund	Årsetfjorden	3 h 20 min
03 Oct 2024	Ronja Naeroeysund	Årsetfjorden	2 h 49 min
02 Oct 2024	Ronja Naeroeysund	Årsetfjorden	7 h 48 min
23 Apr 2024	Ronja Explorer	Lekafjorden II	42 min
22 Apr 2024	Ronja Explorer	Lekafjorden II	3 h 58 min

Source: Norwegian Coastal Administration (AIS) · calculated by the Salmon Ledger · updated 01 Oct 2026

Licences

Site MAB: 5,460 tonnes

Licence	Type	Capacity	Holder
NT NR 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Sinkaberg Havbruk AS
NT NR 0012	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	AS Aqua
NT NR 0047	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Pharmaq AS
NT NR 0052	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Sinkaberg Havbruk AS
NT NR 0057	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Emilsen Havbruk AS
NT V 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Sinkaberg Havbruk AS
NT V 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	812 t	Emilsen Havbruk AS
NT V 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	806 t	AS Aqua
NT V 0014	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Sinkaberg Havbruk AS
TR ND 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	300 t	Sinkaberg Havbruk AS
TR ND 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Sinkaberg Havbruk AS
TR NR 0006	Forskning / matfiskSalmon	780 t	Pharmaq AS
TR NR 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	268 t	Brønnøy Farming AS

Source: Directorate of Fisheries, aquaculture register · updated 01 Oct 2026