Låderskjera

Site 38957 · Bokn municipality · Production area 2, Ryfylke

Below the lice limit, week 39Operated by Grieg Seafood Farming AS

0.35Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

1Weeks above the limit in 2026of 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

2Lice treatments in 2026Latest: Freshwater treatment, week 27, 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

14Wellboat visits in 2026by 2 different vessels · latest 09 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

Show as table

Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.16	0.5	Below the limit
2	0.12	0.5	Below the limit
3	0.14	0.5	Below the limit
4	0.18	0.5	Below the limit
5	0.20	0.5	Below the limit
6	0.17	0.5	Below the limit
7	0.31	0.5	Below the limit
8	0.27	0.5	Below the limit
9	0.29	0.5	Below the limit
10	0.32	0.5	Below the limit
11	0.29	0.5	Below the limit
12	0.18	0.5	Below the limit
13	0.18	0.5	Below the limit
14	0.27	0.5	Below the limit
15	0.40	0.5	Near the limit
16	0.28	0.2	Above the limit
17	0.17	0.2	Near the limit
18	0.14	0.2	Below the limit
19	0.16	0.2	Below the limit
20	0.14	0.2	Below the limit
21	0.14	0.2	Below the limit
22	0.17	0.5	Below the limit
23	0.15	0.5	Below the limit
24	0.20	0.5	Below the limit
25	0.13	0.5	Below the limit
26	0.24	0.5	Below the limit
27	0.40	0.5	Near the limit
28	0.12	0.5	Below the limit
29	0.15	0.5	Below the limit
30	0.23	0.5	Below the limit
31	0.27	0.5	Below the limit
32	0.33	0.5	Below the limit
33	0.35	0.5	Below the limit
34	0.30	0.5	Below the limit
35	0.34	0.5	Below the limit
36	0.40	0.5	Near the limit
37	0.13	0.5	Below the limit
38	0.27	0.5	Below the limit
39	0.35	0.5	Below the limit

Earlier years

20250 of 8 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

Show as table

Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.20	0.5	Below the limit
2	unknown	0.5	Not reported
3	unknown	0.5	Not reported
4	unknown	0.5	Not reported
5	unknown	0.5	Not reported
6	unknown	0.5	Not reported
7	unknown	0.5	Not reported
8	unknown	0.5	Not reported
9	unknown	0.5	Not reported
10	unknown	0.5	Not reported
11	unknown	0.5	Not reported
12	unknown	0.5	Not reported
13	unknown	0.5	Not reported
14	unknown	0.5	Not reported
15	unknown	0.5	Not reported
16	unknown	0.2	Not reported
17	unknown	0.2	Not reported
18	unknown	0.2	Not reported
19	unknown	0.2	Not reported
20	unknown	0.2	Not reported
21	unknown	0.2	Not reported
22	unknown	0.5	Not reported
23	unknown	0.5	Not reported
24	unknown	0.5	Not reported
25	unknown	0.5	Not reported
26	unknown	0.5	Not reported
27	unknown	0.5	Not reported
28	unknown	0.5	Not reported
29	unknown	0.5	Not reported
30	unknown	0.5	Not reported
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	0.00	0.5	Below the limit
47	0.00	0.5	Below the limit
48	0.00	0.5	Below the limit
49	0.00	0.5	Below the limit
50	0.00	0.5	Below the limit
51	0.11	0.5	Below the limit
52	0.09	0.5	Below the limit

20243 of 51 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

Show as table

Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.21	0.5	Below the limit
2	0.27	0.5	Below the limit
3	unknown	0.5	Reported without a count
4	0.12	0.5	Below the limit
5	0.19	0.5	Below the limit
6	0.36	0.5	Below the limit
7	0.38	0.5	Below the limit
8	0.34	0.5	Below the limit
9	0.34	0.5	Below the limit
10	0.49	0.5	Near the limit
11	0.49	0.5	Near the limit
12	0.72	0.5	Above the limit
13	0.44	0.5	Near the limit
14	0.42	0.5	Near the limit
15	0.35	0.5	Below the limit
16	0.17	0.2	Near the limit
17	0.18	0.2	Near the limit
18	0.29	0.2	Above the limit
19	0.18	0.2	Near the limit
20	0.17	0.2	Near the limit
21	0.14	0.2	Below the limit
22	0.18	0.5	Below the limit
23	0.16	0.5	Below the limit
24	0.20	0.5	Below the limit
25	0.18	0.5	Below the limit
26	0.24	0.5	Below the limit
27	0.16	0.5	Below the limit
28	0.31	0.5	Below the limit
29	0.38	0.5	Below the limit
30	0.41	0.5	Near the limit
31	0.45	0.5	Near the limit
32	0.44	0.5	Near the limit
33	0.40	0.5	Near the limit
34	0.48	0.5	Near the limit
35	1.28	0.5	Above the limit
36	0.46	0.5	Near the limit
37	0.30	0.5	Below the limit
38	0.32	0.5	Below the limit
39	0.10	0.5	Below the limit
40	0.16	0.5	Below the limit
41	0.13	0.5	Below the limit
42	0.05	0.5	Below the limit
43	0.15	0.5	Below the limit
44	0.15	0.5	Below the limit
45	0.13	0.5	Below the limit
46	0.08	0.5	Below the limit
47	0.05	0.5	Below the limit
48	0.05	0.5	Below the limit
49	0.40	0.5	Near the limit
50	0.10	0.5	Below the limit
51	0.13	0.5	Below the limit
52	0.30	0.5	Below the limit

20230 of 13 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

Show as table

Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	0.03	0.5	Below the limit
41	0.11	0.5	Below the limit
42	0.11	0.5	Below the limit
43	0.30	0.5	Below the limit
44	0.29	0.5	Below the limit
45	0.48	0.5	Near the limit
46	0.34	0.5	Below the limit
47	0.33	0.5	Below the limit
48	0.34	0.5	Below the limit
49	0.20	0.5	Below the limit
50	0.18	0.5	Below the limit
51	0.07	0.5	Below the limit
52	0.10	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 27, 2026
Mechanical delousing, Freshwater treatment3 pens
Week 15, 2024
Other treatment5 pens · Fresh Water Treatment
Week 49, 2023
Other treatment2 pens · Fresh Water Treatment
Week 45, 2023
Other treatment1 pen · Fresh Water Treatment

Show all 5

Week 44, 2023
Other treatment1 pen · Fresh Water Treatment

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

14 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
09 Sep 2026	Rohav	Porsvika	1 h 32 min
04 Sep 2026	Rohav	Porsvika	1 h 21 min
02 Sep 2026	Rohav	Kjeringå	1 h 36 min
02 Sep 2026	Rohav	Kjeringå	1 h 35 min
22 Aug 2026	Ronja Azul	Tollaksholmen	2 h 38 min
14 Aug 2026	Ronja Azul	Gråtnes	2 h 14 min
28 Jul 2026	Ronja Azul	Øklandsvågen	3 h 10 min
13 Jul 2026	Ronja Azul	Porsvika	3 h 24 min
12 Jul 2026	Ronja Azul	Helgøy	1 h 27 min
04 Jul 2026	Ronja Azul	Rennaren	10 h 14 min
04 Jul 2026	Ronja Azul	Rennaren	6 h 17 min
03 Jul 2026	Ronja Azul	Rennaren	8 h 46 min

Show 10 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
02 Jul 2026	Ronja Azul	Rennaren	20 h 45 min
28 May 2026	Ronja Azul	Vassvik	5 h 10 min
11 Dec 2025	Ronja Azul	Helgøy	1 h 43 min
05 Oct 2024	Ronja Azul	Oltesvik	2 h 15 min
30 Sep 2024	Ronja Azul	Rennaren	4 h 28 min
13 Sep 2024	Ronja Azul	Ommundsteigen	3 h 31 min
08 Sep 2024	Norwegian Gannet	Klubben	7 h 8 min
06 Sep 2024	Ronja Azul	Dyrholmen	6 h 55 min
12 Apr 2024	Ronja Azul	Tungesvik	13 h 13 min
10 Apr 2024	Ronja Azul	Tungesvik	9 h 46 min

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

Who has reported

The companies that have submitted lice counts for this site, with the first and last week.

Company	From	To
Grieg Seafood Rogaland Sjø AS	Week 40, 2023	Week 47, 2025
Grieg Seafood Norway AS	Week 50, 2024	Week 50, 2024
Grieg Seafood Farming AS	Week 48, 2025	Week 39, 2026

Source: Norwegian Food Safety Authority (organisation number on each lice report)

Licences

Site MAB: 3,600 tonnes

Licence	Type	Capacity	Holder
R B 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Grieg Seafood Farming AS
R B 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Grieg Seafood Farming AS
R B 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Grieg Seafood Farming AS
R B 0013	Kommersiell / matfiskSalmon, Rainbow trout, Trout	527 t	Grieg Seafood Farming AS
R F 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Grieg Seafood Farming AS
R K 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Grieg Seafood Farming AS
R R 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Grieg Seafood Farming AS
R S 0001	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Skretting AS
R S 0002	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Skretting AS
R SS 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,576 t	Grieg Seafood Farming AS
R SS 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Grieg Seafood Farming AS

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