Knappen Solheim

Site 13567 · Masfjorden municipality · Production area 4, Nordhordland til Stadt

Status unknown: not reported in week 39Operated by Havforskningsinstituttet

Broodstock site: the limit may differ from the general one.

unknownAdult female lice per fishNo count in week 39. Latest: 3.36 in week 48, 2025Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

unknownWeeks above the limit in 2026No weeks with a count in 2026Calculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

unknownLice treatments in 2026No lice reports in 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

0Wellboat visits in 2026Latest visit 12 Dec 2025Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported15 salmon, December 2017Since 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. Broodstock site: the limit may differ from the general one.

2025

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026Broodstock site: the limit may differ from the general one.

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Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.07	0.5	Below the limit
2	0.08	0.5	Below the limit
3	0.10	0.5	Below the limit
4	0.03	0.5	Below the limit
5	0.02	0.5	Below the limit
6	0.14	0.5	Below the limit
7	0.07	0.5	Below the limit
8	0.14	0.5	Below the limit
9	0.11	0.5	Below the limit
10	0.12	0.5	Below the limit
11	0.10	0.5	Below the limit
12	0.17	0.5	Below the limit
13	0.15	0.5	Below the limit
14	0.19	0.5	Below the limit
15	0.07	0.5	Below the limit
16	0.13	0.2	Below the limit
17	0.13	0.2	Below the limit
18	0.11	0.2	Below the limit
19	0.13	0.2	Below the limit
20	0.08	0.2	Below the limit
21	0.10	0.2	Below the limit
22	0.19	0.5	Below the limit
23	0.16	0.5	Below the limit
24	0.13	0.5	Below the limit
25	0.08	0.5	Below the limit
26	0.05	0.5	Below the limit
27	0.06	0.5	Below the limit
28	0.07	0.5	Below the limit
29	0.02	0.5	Below the limit
30	0.02	0.5	Below the limit
31	0.01	0.5	Below the limit
32	0.11	0.5	Below the limit
33	0.13	0.5	Below the limit
34	0.25	0.5	Below the limit
35	0.12	0.5	Below the limit
36	0.28	0.5	Below the limit
37	0.25	0.5	Below the limit
38	0.77	0.5	Above the limit
39	4.00	0.5	Above the limit
40	3.70	0.5	Above the limit
41	1.40	0.5	Above the limit
42	0.90	0.5	Above the limit
43	0.94	0.5	Above the limit
44	1.33	0.5	Above the limit
45	0.99	0.5	Above the limit
46	1.12	0.5	Above the limit
47	4.95	0.5	Above the limit
48	3.36	0.5	Above the limit
49	unknown	0.5	Not reported
50	unknown	0.5	Not reported
51	unknown	0.5	Not reported
52	unknown	0.5	Not reported

Earlier years

20240 of 28 weeks with a count above the limit

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Adult female lice per fish per week, 2024
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	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	0.00	0.5	Below the limit
24	0.00	0.5	Below the limit
25	0.00	0.5	Below the limit
26	0.00	0.5	Below the limit
27	0.00	0.5	Below the limit
28	0.00	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.00	0.5	Below the limit
31	unknown	0.5	Not reported
32	0.05	0.5	Below the limit
33	0.00	0.5	Below the limit
34	0.00	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.00	0.5	Below the limit
40	0.00	0.5	Below the limit
41	0.00	0.5	Below the limit
42	0.00	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.00	0.5	Below the limit
47	unknown	0.5	Not reported
48	0.00	0.5	Below the limit
49	0.20	0.5	Below the limit
50	0.05	0.5	Below the limit
51	0.05	0.5	Below the limit
52	0.08	0.5	Below the limit

202311 of 13 weeks with a count above the limit (data from week 40)

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
37	0.23	0.5	Below the limit
38	0.40	0.5	Near the limit
39	0.51	0.5	Above the limit
40	0.57	0.5	Above the limit
41	0.65	0.5	Above the limit
42	0.81	0.5	Above the limit
43	0.80	0.5	Above the limit
44	0.76	0.5	Above the limit
45	0.98	0.5	Above the limit
46	0.78	0.5	Above the limit
47	1.21	0.5	Above the limit
48	1.04	0.5	Above the limit
49	1.60	0.5	Above the limit
50	unknown	0.5	Not reported
51	unknown	0.5	Not reported
52	unknown	0.5	Not reported

Treatments

Norwegian Food Safety Authority

No treatments recorded since week 40, 2023.

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

07 Dec 2017
15 salmon escapedCause: Annet · recaptured 1 · Directorate of Fisheries

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
12 Dec 2025	Robris	Oddane ISA/PD outbreak there	1 h 34 min
06 Aug 2025	Robas	Mjølsvik	1 h 44 min

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

Licences

Site MAB: 780 tonnes

Licence	Type	Capacity	Holder
H MF 0002	Forskning / stamfiskSalmon, Rainbow trout, Trout	780 t	Havforskningsinstituttet
H MF 0029	Kommersiell / matfiskTorsk	780 t	Havforskningsinstituttet

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