Olausskjæret

Site 33737 · Frøya municipality · Production area 6, Nordmøre og Sør-Trøndelag

Status unknown: not reported in week 39Operated by Salmar Farming AS · group SalMar

unknownAdult female lice per fishNo count in week 39. Latest: 0.18 in week 20, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 20 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

2Lice treatments in 2026Latest: Other treatment, week 3, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

1Active disease casesPD, confirmed 20 Feb 2026Register since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Wellboat visits in 2026Latest visit 23 Sep 2025Derived 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	0.45	0.5	Near the limit
2	0.34	0.5	Below the limit
3	0.04	0.5	Below the limit
4	0.03	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	0.03	0.5	Below the limit
9	0.00	0.5	Below the limit
10	0.00	0.5	Below the limit
11	0.10	0.5	Below the limit
12	0.10	0.5	Below the limit
13	0.10	0.5	Below the limit
14	0.03	0.5	Below the limit
15	0.15	0.5	Below the limit
16	0.18	0.2	Near the limit
17	0.18	0.2	Near the limit
18	0.08	0.2	Below the limit
19	0.08	0.2	Below the limit
20	0.18	0.2	Near the limit
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

Earlier years

20252 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, 2025
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	0.02	0.5	Below the limit
13	0.05	0.5	Below the limit
14	0.02	0.5	Below the limit
15	0.05	0.5	Below the limit
16	0.00	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	0.02	0.2	Below the limit
21	0.00	0.2	Below the limit
22	0.00	0.5	Below the limit
23	0.07	0.5	Below the limit
24	0.08	0.5	Below the limit
25	0.07	0.5	Below the limit
26	0.04	0.5	Below the limit
27	0.25	0.5	Below the limit
28	0.24	0.5	Below the limit
29	0.19	0.5	Below the limit
30	0.13	0.5	Below the limit
31	0.12	0.5	Below the limit
32	0.42	0.5	Near the limit
33	1.60	0.5	Above the limit
34	0.45	0.5	Near the limit
35	0.17	0.5	Below the limit
36	0.29	0.5	Below the limit
37	0.29	0.5	Below the limit
38	0.48	0.5	Near the limit
39	0.23	0.5	Below the limit
40	0.35	0.5	Below the limit
41	0.40	0.5	Near the limit
42	0.87	0.5	Above the limit
43	0.45	0.5	Near the limit
44	0.30	0.5	Below the limit
45	0.35	0.5	Below the limit
46	0.29	0.5	Below the limit
47	0.17	0.5	Below the limit
48	0.05	0.5	Below the limit
49	0.15	0.5	Below the limit
50	0.10	0.5	Below the limit
51	0.30	0.5	Below the limit
52	0.38	0.5	Below the limit

20240 of 29 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	0.49	0.5	Near the limit
2	0.17	0.5	Below the limit
3	0.32	0.5	Below the limit
4	0.25	0.5	Below the limit
5	0.31	0.5	Below the limit
6	0.41	0.5	Near the limit
7	0.17	0.5	Below the limit
8	0.27	0.5	Below the limit
9	0.20	0.5	Below the limit
10	0.37	0.5	Below the limit
11	0.09	0.5	Below the limit
12	0.04	0.5	Below the limit
13	0.13	0.5	Below the limit
14	0.12	0.5	Below the limit
15	0.18	0.5	Below the limit
16	0.14	0.2	Below the limit
17	0.02	0.2	Below the limit
18	unknown	0.2	Not reported
19	0.08	0.2	Below the limit
20	0.06	0.2	Below the limit
21	0.19	0.2	Near the limit
22	0.08	0.5	Below the limit
23	0.05	0.5	Below the limit
24	0.23	0.5	Below the limit
25	0.47	0.5	Near the limit
26	0.42	0.5	Near the limit
27	0.46	0.5	Near the limit
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	unknown	0.5	Not reported
47	unknown	0.5	Not reported
48	unknown	0.5	Not reported
49	unknown	0.5	Not reported
50	0.00	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.00	0.5	Below the limit

20231 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

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	0.58	0.5	Above the limit
41	0.25	0.5	Below the limit
42	0.28	0.5	Below the limit
43	0.43	0.5	Near the limit
44	0.10	0.5	Below the limit
45	0.17	0.5	Below the limit
46	0.16	0.5	Below the limit
47	0.09	0.5	Below the limit
48	0.10	0.5	Below the limit
49	0.13	0.5	Below the limit
50	0.19	0.5	Below the limit
51	0.17	0.5	Below the limit
52	0.36	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 3, 2026
Other treatment1 pen · Ferskvann/Thermolicer
Week 2, 2026
Other treatment1 pen · Ferskvann/Thermolicer
Week 49, 2025
Mechanical delousing2 pens
Week 47, 2025
Mechanical delousing1 pen

Show all 19

Week 46, 2025
Mechanical delousing1 pen
Week 43, 2025
Mechanical delousing1 pen
Week 39, 2025
Other treatment3 pens · Ferskvann/Thermolicer
Week 38, 2025
Other treatment3 pens · Ferskvann/Thermolicer · Ferskvann/Wellfighter
Week 35, 2025
Mechanical delousing5 pens
Week 34, 2025
Mechanical delousing1 pen
Week 33, 2025
Mechanical delousing5 pens
Week 30, 2025
Mechanical delousing1 pen
Week 29, 2025
Mechanical delousing4 pens
Week 25, 2024
Mechanical delousing5 pens
Week 22, 2024
Mechanical delousingWhole site
Week 17, 2024
Thermal delousingWhole site
Week 48, 2023
Mechanical delousing1 pen
Week 47, 2023
Mechanical delousing5 pens
Week 41, 2023
Mechanical delousing2 pens

Disease

Norwegian Food Safety Authority

20 Feb 2026
Pancreas disease (PD): confirmedStatus: active · Subtype SAV2 · started 09 Jan 2026 · Norwegian Food Safety Authority
14 Dec 2024
Infectious salmon anaemia (ISA): closedstarted 14 Jun 2024 · Norwegian Food Safety Authority
14 Dec 2024
Pancreas disease (PD): closedSubtype SAV2 · started 14 Jun 2024 · Norwegian Food Safety Authority

Escapes

Directorate of Fisheries

No escapes reported from this site since 2006.

Wellboat visits

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
23 Sep 2025	Ro Vision	Takflua	1 h 53 min
19 Sep 2025	Ronja Princess	Nordskag	1 h 33 min
16 Jul 2025	Ro Vision	Hjortholman	7 h 45 min
14 Dec 2024	Ronja Aurora	Kyrøyene	1 h 21 min
19 Jul 2024	Ronja Princess	Hallarvik	1 h 55 min
25 Apr 2024	Ro Senja	Nordskag	2 h 4 min
10 Jan 2024	Ro Senja	Ørnøya	1 h 37 min
07 Jan 2024	Ro Senja	Ørnøya	2 h 45 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
Refsnes Laks AS	Week 40, 2023	Week 13, 2025
Salmar Oppdrett AS	Week 52, 2024	Week 52, 2024
Salmar Farming AS	Week 14, 2025	Week 20, 2026

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

Licences

Site MAB: 3,120 tonnes

Licence	Type	Capacity	Holder
ST AA 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST AA 0014	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST AA 0026	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST F 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	3,837 t	Salmar Oppdrett AS
ST F 0017	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST F 0026	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST F 0027	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST F 0061	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS

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