Ruggstein

Site 37197 · Frøya municipality · Production area 6, Nordmøre og Sør-Trøndelag

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

unknownAdult female lice per fishNo count in week 39. Latest: 0.25 in week 31, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 31 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

10Lice treatments in 2026Latest: Mechanical delousing, week 30, 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

31Wellboat visits in 2026by 5 different vessels · latest 11 Aug 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

2Escapes reportedNumber unknown, January 2025Since 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	0.47	0.5	Near the limit
2	0.05	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.02	0.5	Below the limit
5	0.03	0.5	Below the limit
6	0.02	0.5	Below the limit
7	0.01	0.5	Below the limit
8	0.00	0.5	Below the limit
9	0.00	0.5	Below the limit
10	0.13	0.5	Below the limit
11	0.10	0.5	Below the limit
12	0.48	0.5	Near the limit
13	0.42	0.5	Near the limit
14	0.08	0.5	Below the limit
15	0.06	0.5	Below the limit
16	0.14	0.2	Below the limit
17	0.19	0.2	Near the limit
18	0.14	0.2	Below the limit
19	0.03	0.2	Below the limit
20	0.03	0.2	Below the limit
21	0.01	0.2	Below the limit
22	0.06	0.5	Below the limit
23	0.08	0.5	Below the limit
24	0.11	0.5	Below the limit
25	0.27	0.5	Below the limit
26	0.38	0.5	Below the limit
27	0.08	0.5	Below the limit
28	0.10	0.5	Below the limit
29	0.20	0.5	Below the limit
30	0.29	0.5	Below the limit
31	0.25	0.5	Below the limit
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	0.01	0.5	Below the limit
12	0.01	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	0.04	0.2	Below the limit
17	0.01	0.2	Below the limit
18	0.01	0.2	Below the limit
19	0.02	0.2	Below the limit
20	0.01	0.2	Below the limit
21	0.01	0.2	Below the limit
22	0.03	0.5	Below the limit
23	0.03	0.5	Below the limit
24	0.09	0.5	Below the limit
25	0.09	0.5	Below the limit
26	0.09	0.5	Below the limit
27	0.07	0.5	Below the limit
28	0.19	0.5	Below the limit
29	0.29	0.5	Below the limit
30	0.16	0.5	Below the limit
31	0.20	0.5	Below the limit
32	0.49	0.5	Near the limit
33	0.34	0.5	Below the limit
34	0.43	0.5	Near the limit
35	0.08	0.5	Below the limit
36	0.09	0.5	Below the limit
37	0.14	0.5	Below the limit
38	0.13	0.5	Below the limit
39	0.17	0.5	Below the limit
40	0.40	0.5	Near the limit
41	0.84	0.5	Above the limit
42	0.66	0.5	Above the limit
43	0.35	0.5	Below the limit
44	0.40	0.5	Near the limit
45	0.25	0.5	Below the limit
46	0.24	0.5	Below the limit
47	0.39	0.5	Below the limit
48	0.46	0.5	Near the limit
49	0.22	0.5	Below the limit
50	0.49	0.5	Near the limit
51	0.16	0.5	Below the limit
52	0.28	0.5	Below the limit

20240 of 36 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	0.37	0.5	Below the limit
2	0.44	0.5	Near the limit
3	0.33	0.5	Below the limit
4	0.11	0.5	Below the limit
5	0.03	0.5	Below the limit
6	0.10	0.5	Below the limit
7	0.20	0.5	Below the limit
8	0.33	0.5	Below the limit
9	0.16	0.5	Below the limit
10	0.12	0.5	Below the limit
11	0.17	0.5	Below the limit
12	0.14	0.5	Below the limit
13	0.11	0.5	Below the limit
14	0.16	0.5	Below the limit
15	0.13	0.5	Below the limit
16	0.05	0.2	Below the limit
17	0.09	0.2	Below the limit
18	0.10	0.2	Below the limit
19	0.17	0.2	Near the limit
20	0.18	0.2	Near the limit
21	0.17	0.2	Near the limit
22	0.05	0.5	Below the limit
23	0.05	0.5	Below the limit
24	0.17	0.5	Below the limit
25	0.45	0.5	Near the limit
26	0.42	0.5	Near the limit
27	0.45	0.5	Near the limit
28	0.19	0.5	Below the limit
29	0.28	0.5	Below the limit
30	0.48	0.5	Near the limit
31	0.37	0.5	Below the limit
32	0.37	0.5	Below the limit
33	0.20	0.5	Below the limit
34	0.17	0.5	Below the limit
35	0.37	0.5	Below the limit
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	unknown	0.5	Not reported
51	unknown	0.5	Not reported
52	0.00	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

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
40	0.19	0.5	Below the limit
41	0.28	0.5	Below the limit
42	0.39	0.5	Below the limit
43	0.22	0.5	Below the limit
44	0.42	0.5	Near the limit
45	0.21	0.5	Below the limit
46	0.15	0.5	Below the limit
47	0.09	0.5	Below the limit
48	0.21	0.5	Below the limit
49	0.16	0.5	Below the limit
50	0.49	0.5	Near the limit
51	0.26	0.5	Below the limit
52	0.37	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 30, 2026
Mechanical delousing1 pen
Week 26, 2026
Mechanical delousing2 pens
Week 24, 2026
Mechanical delousing2 pens
Week 18, 2026
Mechanical delousing5 pens

Show all 39

Week 14, 2026
Mechanical delousing6 pens
Week 13, 2026
Mechanical delousing1 pen
Week 8, 2026
Mechanical delousing2 pens
Week 7, 2026
Mechanical delousing6 pens
Week 2, 2026
Other treatment5 pens · Ferskvann/Thermolicer
Week 1, 2026
Other treatment3 pens · Ferskvann/Thermolicer
Week 51, 2025
Mechanical delousing5 pens
Week 50, 2025
Mechanical delousing3 pens
Week 49, 2025
Mechanical delousing4 pens
Week 46, 2025
Mechanical delousing4 pens
Week 45, 2025
Mechanical delousing1 pen
Week 43, 2025
Mechanical delousing6 pens
Week 42, 2025
Mechanical delousing4 pens
Week 40, 2025
Mechanical delousing6 pens
Week 39, 2025
Mechanical delousing4 pens
Week 38, 2025
Mechanical delousing8 pens
Week 37, 2025
Mechanical delousing1 pen
Week 35, 2025
Mechanical delousing9 pens
Week 34, 2025
Mechanical delousing7 pens
Week 33, 2025
Mechanical delousing2 pens
Week 32, 2025
Mechanical delousing7 pens
Week 31, 2025
Mechanical delousing2 pens
Week 30, 2025
Mechanical delousing7 pens
Week 28, 2025
Mechanical delousing2 pens
Week 33, 2024
Other treatment3 pens · Hydrolicer
Week 31, 2024
Other treatment3 pens · Hydrolicer
Week 28, 2024
Other treatment3 pens · Hydrolicer
Week 26, 2024
Other treatment3 pens · Hydrolicer
Week 21, 2024
Other treatment3 pens · Hydrolicer
Week 4, 2024
Other treatment2 pens · Optiflush
Week 3, 2024
Other treatment7 pens · Ferskvann/Thermolicer, Optiflush
Week 46, 2023
Other treatment7 pens · Hydrolicer
Week 45, 2023
Other treatment3 pens · Hydrolicer
Week 43, 2023
Other treatment3 pens · Hydrolicer
Week 42, 2023
Other treatment2 pens · Hydrolicer

Disease

Norwegian Food Safety Authority

20 Feb 2026
Pancreas disease (PD): confirmedStatus: active · Subtype SAV2 · started 26 Jan 2026 · Norwegian Food Safety Authority
14 Dec 2024
Pancreas disease (PD): closedSubtype SAV2 · started 31 Jul 2024 · Norwegian Food Safety Authority

Escapes

Directorate of Fisheries

03 Jan 2025
Escape of salmon, number unknownCause: Utredes · recaptured 1 · Directorate of Fisheries
28 Jun 2022
Escape of salmon, number unknownCause: Foreløpig uavklart. · Directorate of Fisheries

Wellboat visits

31 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
11 Aug 2026	Froy Odin	Nordskag	40 min
04 Aug 2026	Froy Odin	Salatskjæra disease or zone there	1 h 25 min
22 Jul 2026	Ro Vision	Hallarvik	4 h 41 min
21 Jul 2026	Froy Odin	Nordskag	3 h 43 min
07 Jul 2026	Ro Vision	Salatskjæra disease or zone there	3 h 20 min
29 Jun 2026	Ronja Follafoss	Nordskag	3 h 29 min
27 Jun 2026	Ro Vision	Buholmen	16 h 29 min
18 Jun 2026	Ronja Follafoss	Ørnøya disease or zone there	3 h 22 min
11 Jun 2026	Ro Vision	Nordskag	3 h 2 min
09 Jun 2026	Ro Vision	Salatskjæra disease or zone there	2 h 27 min
08 Jun 2026	Ro Vision	Salatskjæra disease or zone there	23 h 16 min
04 Jun 2026	Froy Odin	Nordskag	2 h 46 min

Show 70 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
22 May 2026	Ronja Princess	Nordskag	1 h 18 min
15 May 2026	Froy Odin	Nordskag	6 h 35 min
07 May 2026	Froy Odin	Nordskag	3 h 6 min
29 Apr 2026	Ro Vision	Nordskag	28 h 30 min
28 Apr 2026	Ro Vision	Nordskag	19 h 27 min
27 Apr 2026	Ro Vision	Nordskag	4 h 26 min
23 Apr 2026	Froy Odin	Nordskag	1 h 59 min
16 Apr 2026	Froy Odin	Kattholmen disease or zone there	2 h 10 min
31 Mar 2026	Ronja Spirit	Nordskag	4 h 26 min
27 Mar 2026	Froy Odin	Nordskag	1 h 52 min
25 Mar 2026	Ronja Spirit	Nordskag	6 h 2 min
09 Jan 2026	Ro Vision	no other farm	16 h 9 min
08 Jan 2026	Ro Vision	no other farm	6 h 44 min
07 Jan 2026	Ro Vision	no other farm	7 h 18 min
06 Jan 2026	Ro Vision	no other farm	15 h 18 min
05 Jan 2026	Ro Vision	no other farm	2 h 13 min
04 Jan 2026	Ro Vision	Kattholmen	16 h 11 min
03 Jan 2026	Ro Vision	Kattholmen	9 h 16 min
02 Jan 2026	Ro Vision	Kattholmen	10 h 50 min
08 Dec 2025	Froy Odin	Nordskag	16 h 16 min
07 Dec 2025	Ronja Princess	Nordskag	3 h 15 min
06 Dec 2025	Froy Odin	Nordskag	1 h 41 min
05 Dec 2025	Froy Odin	Nordskag	1 h 45 min
04 Dec 2025	Froy Odin	Nordskag	2 h 39 min
04 Dec 2025	Froy Odin	Nordskag	33 min
30 Nov 2025	Ronja Princess	Nordskag	3 h 49 min
20 Nov 2025	Ronja Princess	Nordskag	1 h 57 min
17 Nov 2025	Ronja Princess	Nordskag	2 h 38 min
10 Nov 2025	Ro Vision	Kattholmen	21 h 9 min
27 Sep 2025	Ronja Princess	Rataren	5 h 46 min
16 Sep 2025	Aasvaerfjord	Kattholmen	53 h 34 min
14 Sep 2025	Aasvaerfjord	Kattholmen	32 h 39 min
27 Aug 2025	Aasvaerfjord	Ørnøya	18 h 22 min
18 Aug 2025	Aasvaerfjord	Salatskjæra	71 h 49 min
17 Aug 2025	Ro Vision	Suholmen	3 h 50 min
16 Aug 2025	Ro Vision	Suholmen	6 h 22 min
07 Aug 2025	Ro Vision	Nordskag	11 h 7 min
04 Aug 2025	Ro Vision	Nordskag	45 h 14 min
03 Aug 2025	Ro Vision	Nordskag	15 h 9 min
26 Jul 2025	Ro Vision	Kattholmen II	6 h 37 min
24 Jul 2025	Ro Vision	Kattholmen II	39 h 52 min
23 Jul 2025	Ro Vision	Kattholmen II	14 h 30 min
08 Jul 2025	Ro Vision	Seterneset	26 h 22 min
20 Jan 2025	Ronja Aurora	no other farm	3 h 27 min
19 Jan 2025	Ro Vision	Nordskag	1 h 14 min
31 Dec 2024	Ronja Vita	Rataren	4 h 46 min
31 Dec 2024	Ronja Mistral	Mannbruholmen	3 h 45 min
20 Dec 2024	Ronja Aurora	Olausskjæret disease or zone there	1 h 57 min
12 Sep 2024	Froy Odin	Nordskag	2 h 49 min
11 Sep 2024	Froy Odin	Nordskag	3 h 30 min
07 Sep 2024	Ronja Princess	Nordskag	3 h 18 min
06 Sep 2024	Ronja Princess	Nordskag	4 h 0 min
03 Aug 2024	Ro Senja	Buholmen	2 h 12 min
25 May 2024	Ronja Princess	Nordskag	3 h 34 min
28 Apr 2024	Froy Odin	Nordskag	2 h 45 min
15 Apr 2024	Ronja Princess	Nordskag	2 h 21 min
15 Apr 2024	Ronja Princess	Nordskag	2 h 43 min
14 Apr 2024	Ronja Princess	Nordskag	2 h 24 min
14 Apr 2024	Ronja Princess	Nordskag	3 h 46 min
09 Apr 2024	Ronja Princess	Nordskag	6 h 15 min
07 Apr 2024	Aasvaerfjord	Nordskag	1 h 31 min
07 Apr 2024	Aasvaerfjord	Nordskag	1 h 26 min
08 Mar 2024	Ro Vision	Ørnøya	1 h 35 min
05 Mar 2024	Ro Vision	Suholmen	1 h 28 min
24 Jan 2024	Ro Senja	no other farm	19 h 5 min
19 Jan 2024	Ro Senja	Olausskjæret	59 h 14 min
18 Jan 2024	Ro Senja	Olausskjæret	9 h 43 min
17 Jan 2024	Ro Senja	Olausskjæret	14 h 52 min
16 Jan 2024	Ro Senja	Olausskjæret	3 h 5 min
15 Jan 2024	Ro Senja	Olausskjæret	9 h 20 min

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

Licences

Site MAB: 6,240 tonnes

Licence	Type	Capacity	Holder
ST AA 0007	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST AA 0017	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST AA 0033	Kommersiell / matfisk-grønn bSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST AA 0034	Kommersiell / matfisk-grønn bSalmon, 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 0018	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST F 0019	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST F 0069	Kommersiell / matfisk-grønn bSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST F 0070	Kommersiell / matfisk-grønn bSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST R 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST R 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST R 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST R 0018	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS
ST Ø 0001	Kommersiell / matfisk-grønn konvertertSalmon, Rainbow trout, Trout	788 t	Salmar Oppdrett AS

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