Nørholmen

Site 33937 · Smøla municipality · Production area 6, Nordmøre og Sør-Trøndelag

Below the lice limit, week 39Operated by Mowi Seawater Norway AS · group Mowi

0.16Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 26 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

13Lice treatments in 2026Latest: Thermal delousing, week 39, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Active disease casesNone active · 1 earlierRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

12Wellboat visits in 2026by 1 vessel · latest 08 Aug 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported1-10 salmon, June 2026Since 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	unknown	0.5	Not reported
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	0.00	0.5	Below the limit
15	0.00	0.5	Below the limit
16	0.02	0.2	Below the limit
17	0.01	0.2	Below the limit
18	0.00	0.2	Below the limit
19	0.03	0.2	Below the limit
20	0.02	0.2	Below the limit
21	0.01	0.2	Below the limit
22	0.00	0.5	Below the limit
23	0.06	0.5	Below the limit
24	0.06	0.5	Below the limit
25	0.10	0.5	Below the limit
26	0.17	0.5	Below the limit
27	0.13	0.5	Below the limit
28	0.04	0.5	Below the limit
29	0.17	0.5	Below the limit
30	0.15	0.5	Below the limit
31	0.33	0.5	Below the limit
32	0.08	0.5	Below the limit
33	0.27	0.5	Below the limit
34	0.21	0.5	Below the limit
35	0.21	0.5	Below the limit
36	0.15	0.5	Below the limit
37	0.15	0.5	Below the limit
38	0.23	0.5	Below the limit
39	0.16	0.5	Below the limit

Earlier years

20250 of 15 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	0.28	0.5	Below the limit
2	0.34	0.5	Below the limit
3	0.37	0.5	Below the limit
4	0.43	0.5	Near the limit
5	0.42	0.5	Near the limit
6	0.42	0.5	Near the limit
7	0.48	0.5	Near the limit
8	0.24	0.5	Below the limit
9	0.30	0.5	Below the limit
10	0.32	0.5	Below the limit
11	0.44	0.5	Near the limit
12	0.42	0.5	Near the limit
13	0.44	0.5	Near the limit
14	0.43	0.5	Near the limit
15	0.47	0.5	Near the limit
16	unknown	0.2	Reported without a count
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	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	unknown	0.5	Not reported

20245 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	0.05	0.5	Below the limit
12	0.00	0.5	Below the limit
13	0.00	0.5	Below the limit
14	0.03	0.5	Below the limit
15	0.01	0.5	Below the limit
16	0.00	0.2	Below the limit
17	0.00	0.2	Below the limit
18	0.00	0.2	Below the limit
19	0.00	0.2	Below the limit
20	0.01	0.2	Below the limit
21	0.03	0.2	Below the limit
22	0.02	0.5	Below the limit
23	0.02	0.5	Below the limit
24	0.12	0.5	Below the limit
25	0.19	0.5	Below the limit
26	0.18	0.5	Below the limit
27	0.28	0.5	Below the limit
28	0.11	0.5	Below the limit
29	0.04	0.5	Below the limit
30	0.22	0.5	Below the limit
31	0.23	0.5	Below the limit
32	0.43	0.5	Near the limit
33	0.17	0.5	Below the limit
34	0.18	0.5	Below the limit
35	0.44	0.5	Near the limit
36	0.46	0.5	Near the limit
37	0.29	0.5	Below the limit
38	0.62	0.5	Above the limit
39	0.70	0.5	Above the limit
40	0.44	0.5	Near the limit
41	0.31	0.5	Below the limit
42	0.41	0.5	Near the limit
43	0.22	0.5	Below the limit
44	0.49	0.5	Near the limit
45	0.48	0.5	Near the limit
46	1.48	0.5	Above the limit
47	1.22	0.5	Above the limit
48	0.92	0.5	Above the limit
49	0.41	0.5	Near the limit
50	0.21	0.5	Below the limit
51	0.17	0.5	Below the limit
52	0.20	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
Thermal delousing5 pens
Week 37, 2026
Mechanical delousing4 pens
Week 36, 2026
Mechanical delousing5 pens
Week 35, 2026
Mechanical delousing4 pens

Show all 27

Week 34, 2026
Mechanical delousing5 pens
Week 32, 2026
Mechanical delousing, Thermal delousing9 pens
Week 30, 2026
Thermal delousing5 pens
Week 28, 2026
Mechanical delousing4 pens
Week 27, 2026
Mechanical delousing5 pens
Week 24, 2026
Mechanical delousing7 pens
Week 23, 2026
Mechanical delousing2 pens
Week 6, 2025
Thermal delousing1 pen
Week 5, 2025
Thermal delousing1 pen
Week 1, 2025
Thermal delousing1 pen
Week 50, 2024
Medicinal bath2 pens · Azamethiphos
Week 49, 2024
Medicinal bath4 pens · Azamethiphos
Week 47, 2024
Mechanical delousing2 pens
Week 40, 2024
Mechanical delousing6 pens
Week 39, 2024
Mechanical delousing3 pens
Week 37, 2024
Mechanical delousing4 pens
Week 36, 2024
Mechanical delousing4 pens
Week 35, 2024
Mechanical delousing1 pen
Week 33, 2024
Mechanical delousing5 pens
Week 31, 2024
Mechanical delousing5 pens
Week 28, 2024
Thermal delousing1 pen
Week 27, 2024
Thermal delousing8 pens
Week 22, 2024
Thermal delousing3 pens

Disease

Norwegian Food Safety Authority

09 Aug 2025
Pancreas disease (PD): closedSubtype SAV2 · started 15 Apr 2025 · Norwegian Food Safety Authority

Escapes

Directorate of Fisheries

18 Jun 2026
1-10 salmon escapedCause: Usikkert, mulig ved nedslipp av not etter endt behandling. · Directorate of Fisheries

Wellboat visits

12 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
08 Aug 2026	Froy Saga	Korsholman	8 h 48 min
23 Jul 2026	Froy Saga	Breidvika	52 h 0 min
22 Jul 2026	Froy Saga	Breidvika	8 h 51 min
10 Apr 2026	Froy Saga	Bremnessvaet	2 h 1 min
10 Apr 2026	Froy Saga	Bremnessvaet	3 h 58 min
09 Apr 2026	Froy Saga	Bremnessvaet	1 h 53 min
09 Apr 2026	Froy Saga	Bremnessvaet	2 h 29 min
09 Apr 2026	Froy Saga	Bremnessvaet	1 h 41 min
08 Apr 2026	Froy Saga	Bremnessvaet	2 h 22 min
01 Apr 2026	Froy Saga	Bremnessvaet	3 h 28 min
01 Apr 2026	Froy Saga	Bremnessvaet	1 h 18 min
31 Mar 2026	Froy Saga	Bremnessvaet	2 h 24 min

Show 46 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
09 Feb 2025	Ro Venture	Lamøya	14 h 50 min
28 Jan 2025	Ro Fortune	Segelråa	11 h 38 min
05 Jan 2025	Freyja	Lille Torsøy	12 h 22 min
09 Dec 2024	Freyja	Brettingen	1 h 4 min
09 Dec 2024	Freyja	Brettingen	3 h 44 min
09 Dec 2024	Freyja	Brettingen	4 h 7 min
08 Dec 2024	Freyja	Brettingen	4 h 26 min
08 Dec 2024	Freyja	Brettingen	4 h 7 min
07 Dec 2024	Freyja	Brettingen	11 h 32 min
07 Dec 2024	Freyja	Brettingen	4 h 22 min
07 Dec 2024	Freyja	Brettingen	4 h 21 min
06 Dec 2024	Freyja	Brettingen	1 h 38 min
06 Dec 2024	Freyja	Brettingen	4 h 2 min
06 Dec 2024	Freyja	Brettingen	4 h 52 min
06 Dec 2024	Freyja	Brettingen	1 h 51 min
05 Dec 2024	Freyja	Brettingen	3 h 40 min
05 Dec 2024	Freyja	Brettingen	1 h 16 min
22 Nov 2024	Froy Hovding	Skåren	60 h 32 min
21 Nov 2024	Froy Hovding	Skåren	19 h 17 min
11 Nov 2024	Freyja	Lønngrunnen	3 h 3 min
05 Oct 2024	Froy Jarl	Lønngrunnen	21 h 35 min
04 Oct 2024	Froy Jarl	Lønngrunnen	1 h 45 min
03 Oct 2024	Froy Jarl	Lønngrunnen	28 h 33 min
01 Oct 2024	Froy Jarl	Lønngrunnen	30 h 1 min
30 Sep 2024	Froy Jarl	Lønngrunnen	9 h 45 min
28 Sep 2024	Froy Jarl	Lønngrunnen	26 h 56 min
25 Sep 2024	Froy Jarl	Lønngrunnen	12 h 8 min
11 Sep 2024	Froy Jarl	Tranøya N	11 h 12 min
12 Aug 2024	Froy Jarl	Lønngrunnen	15 h 36 min
04 Aug 2024	Froy Jarl	Lille Torsøy	19 h 44 min
02 Aug 2024	Froy Jarl	Lille Torsøy	23 h 57 min
01 Aug 2024	Froy Jarl	Lille Torsøy	17 h 14 min
31 Jul 2024	Froy Jarl	Lille Torsøy	7 h 15 min
08 Jul 2024	Freyja	Lille Torsøy	17 h 53 min
06 Jul 2024	Freyja	Lille Torsøy	27 h 23 min
05 Jul 2024	Freyja	Lille Torsøy	20 h 44 min
03 Jul 2024	Freyja	Lille Torsøy	17 h 54 min
02 Jul 2024	Freyja	Lille Torsøy	8 h 54 min
01 Jul 2024	Freyja	Lille Torsøy	13 h 9 min
31 May 2024	Freyja	Bremnessvaet	9 h 22 min
30 May 2024	Freyja	Bremnessvaet	10 h 36 min
29 May 2024	Freyja	Bremnessvaet	4 h 54 min
06 Apr 2024	Ronja Evolution	Storvika	3 h 50 min
05 Apr 2024	Ronja Evolution	Storvika	4 h 5 min
03 Apr 2024	Ronja Evolution	Storvika	1 h 35 min
02 Apr 2024	Ronja Evolution	Storvika	1 h 35 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
M AV 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
M AV 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
M AV 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
M AV 0018	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
M SM 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
M SM 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
M SM 0013	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
M SM 0017	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS

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