Mannbruholmen

Site 10232 · Frøya municipality · Production area 6, Nordmøre og Sør-Trøndelag

Status unknown: not reported in week 39Operated by Mowi Seawater Norway AS · group Mowi

unknownAdult female lice per fishNo count in week 39. Latest: 0.00 in week 28, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 28 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

6Lice treatments in 2026Latest: Mechanical delousing, week 24, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

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

1Wellboat visits in 2026by 1 vessel · latest 19 Jan 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

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Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.11	0.5	Below the limit
2	0.03	0.5	Below the limit
3	0.06	0.5	Below the limit
4	0.13	0.5	Below the limit
5	0.14	0.5	Below the limit
6	0.10	0.5	Below the limit
7	0.07	0.5	Below the limit
8	0.09	0.5	Below the limit
9	0.10	0.5	Below the limit
10	0.15	0.5	Below the limit
11	0.26	0.5	Below the limit
12	0.35	0.5	Below the limit
13	0.20	0.5	Below the limit
14	0.26	0.5	Below the limit
15	0.40	0.5	Near the limit
16	0.06	0.2	Below the limit
17	0.06	0.2	Below the limit
18	0.01	0.2	Below the limit
19	0.03	0.2	Below the limit
20	0.02	0.2	Below the limit
21	0.02	0.2	Below the limit
22	0.05	0.5	Below the limit
23	0.08	0.5	Below the limit
24	0.19	0.5	Below the limit
25	0.27	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	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

20253 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	0.01	0.5	Below the limit
14	0.01	0.5	Below the limit
15	0.02	0.5	Below the limit
16	0.02	0.2	Below the limit
17	0.01	0.2	Below the limit
18	0.02	0.2	Below the limit
19	0.03	0.2	Below the limit
20	0.05	0.2	Below the limit
21	0.03	0.2	Below the limit
22	0.07	0.5	Below the limit
23	0.10	0.5	Below the limit
24	0.10	0.5	Below the limit
25	0.10	0.5	Below the limit
26	0.00	0.5	Below the limit
27	0.02	0.5	Below the limit
28	0.08	0.5	Below the limit
29	0.13	0.5	Below the limit
30	0.25	0.5	Below the limit
31	0.11	0.5	Below the limit
32	0.38	0.5	Below the limit
33	0.47	0.5	Near the limit
34	0.32	0.5	Below the limit
35	0.14	0.5	Below the limit
36	0.31	0.5	Below the limit
37	0.08	0.5	Below the limit
38	0.46	0.5	Near the limit
39	0.49	0.5	Near the limit
40	0.89	0.5	Above the limit
41	0.73	0.5	Above the limit
42	0.80	0.5	Above the limit
43	0.11	0.5	Below the limit
44	0.16	0.5	Below the limit
45	0.10	0.5	Below the limit
46	0.23	0.5	Below the limit
47	0.01	0.5	Below the limit
48	0.01	0.5	Below the limit
49	0.21	0.5	Below the limit
50	0.11	0.5	Below the limit
51	0.08	0.5	Below the limit
52	0.17	0.5	Below the limit

20243 of 39 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	0.10	0.5	Below the limit
2	0.17	0.5	Below the limit
3	0.25	0.5	Below the limit
4	0.32	0.5	Below the limit
5	0.34	0.5	Below the limit
6	0.34	0.5	Below the limit
7	0.38	0.5	Below the limit
8	0.29	0.5	Below the limit
9	0.57	0.5	Above the limit
10	0.19	0.5	Below the limit
11	0.22	0.5	Below the limit
12	0.18	0.5	Below the limit
13	0.21	0.5	Below the limit
14	0.22	0.5	Below the limit
15	0.13	0.5	Below the limit
16	0.11	0.2	Below the limit
17	0.12	0.2	Below the limit
18	0.16	0.2	Below the limit
19	0.14	0.2	Below the limit
20	0.18	0.2	Near the limit
21	0.17	0.2	Near the limit
22	0.23	0.5	Below the limit
23	0.34	0.5	Below the limit
24	0.62	0.5	Above the limit
25	0.36	0.5	Below the limit
26	0.21	0.5	Below the limit
27	0.41	0.5	Near the limit
28	0.48	0.5	Near the limit
29	0.65	0.5	Above the limit
30	0.32	0.5	Below the limit
31	0.24	0.5	Below the limit
32	0.24	0.5	Below the limit
33	0.25	0.5	Below the limit
34	0.22	0.5	Below the limit
35	0.21	0.5	Below the limit
36	0.26	0.5	Below the limit
37	0.33	0.5	Below the limit
38	0.44	0.5	Near the limit
39	unknown	0.5	Reported without a count
40	unknown	0.5	Reported without a count
41	unknown	0.5	Reported without a count
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	0.13	0.5	Below the limit
41	0.15	0.5	Below the limit
42	0.22	0.5	Below the limit
43	0.35	0.5	Below the limit
44	0.39	0.5	Below the limit
45	0.14	0.5	Below the limit
46	0.15	0.5	Below the limit
47	0.17	0.5	Below the limit
48	0.08	0.5	Below the limit
49	0.15	0.5	Below the limit
50	0.24	0.5	Below the limit
51	0.11	0.5	Below the limit
52	0.12	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 24, 2026
Mechanical delousing1 pen
Week 16, 2026
Mechanical delousing7 pens
Week 13, 2026
Mechanical delousing2 pens
Week 12, 2026
Mechanical delousing9 pens

Show all 46

Week 4, 2026
Thermal delousing2 pens
Week 1, 2026
Mechanical delousing10 pens
Week 52, 2025
Mechanical delousing1 pen
Week 50, 2025
Mechanical delousing4 pens
Week 49, 2025
Mechanical delousing7 pens
Week 47, 2025
Thermal delousingWhole site
Week 45, 2025
Mechanical delousing4 pens
Week 44, 2025
Mechanical delousing7 pens
Week 43, 2025
Thermal delousing8 pens
Week 42, 2025
Thermal delousing3 pens
Week 41, 2025
Mechanical delousing7 pens
Week 40, 2025
Mechanical delousing4 pens
Week 39, 2025
Mechanical delousingWhole site
Week 37, 2025
Mechanical delousing3 pens
Week 36, 2025
Mechanical delousing8 pens
Week 35, 2025
Thermal delousing11 pens
Week 34, 2025
Mechanical delousing7 pens
Week 33, 2025
Mechanical delousing4 pens
Week 31, 2025
Mechanical delousing4 pens
Week 30, 2025
Mechanical delousing6 pens
Week 29, 2025
Thermal delousing2 pens
Week 26, 2025
Thermal delousing5 pens
Week 25, 2025
Thermal delousing3 pens
Week 34, 2024
Mechanical delousingWhole site
Week 30, 2024
Mechanical delousing4 pens
Week 26, 2024
Mechanical delousing2 pens
Week 25, 2024
Mechanical delousing6 pens
Week 21, 2024
Thermal delousing1 pen
Week 20, 2024
Thermal delousing1 pen
Week 19, 2024
Thermal delousing, Mechanical delousing7 pens
Week 15, 2024
Thermal delousing2 pens
Week 10, 2024
Thermal delousing5 pens
Week 8, 2024
Thermal delousing2 pens
Week 7, 2024
Thermal delousing1 pen
Week 51, 2023
Thermal delousing4 pens
Week 48, 2023
Mechanical delousing5 pens
Week 47, 2023
Mechanical delousing2 pens
Week 45, 2023
Mechanical delousing4 pens
Week 44, 2023
Mechanical delousing6 pens
Week 43, 2023
Mechanical delousing1 pen
Week 41, 2023
Mechanical delousing1 pen
Week 40, 2023
Mechanical delousing6 pens

Disease

Norwegian Food Safety Authority

26 Jan 2026
Pancreas disease (PD): confirmedStatus: active · Subtype SAV2 · started 17 Dec 2025 · Norwegian Food Safety Authority
14 Dec 2024
Pancreas disease (PD): closedSubtype SAV2 · started 24 Jul 2024 · Norwegian Food Safety Authority

Escapes

Directorate of Fisheries

No escapes reported from this site since 2006.

Wellboat visits

1 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
19 Jan 2026	Froy Saga	Grøttingsøy disease or zone there	19 h 24 min
21 Nov 2025	Froy Saga	Tennøya	11 h 52 min
17 Nov 2025	Froy Saga	Tennøya	85 h 44 min
23 Oct 2025	Froy Saga	Grøttingsøy disease or zone there	23 h 47 min
22 Oct 2025	Froy Saga	Grøttingsøy disease or zone there	17 h 2 min
20 Oct 2025	Froy Saga	Grøttingsøy disease or zone there	44 h 49 min
31 Aug 2025	Froy Saga	Tennøya	23 h 21 min
30 Aug 2025	Froy Saga	Tennøya	13 h 29 min
29 Aug 2025	Froy Saga	Tennøya	13 h 15 min
27 Aug 2025	Froy Saga	Tennøya	39 h 52 min
26 Aug 2025	Froy Saga	Tennøya	18 h 20 min
15 Jul 2025	Froy Saga	Leite	17 h 45 min

Show 41 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
14 Jul 2025	Froy Saga	Leite	17 h 16 min
26 Jun 2025	Freyja	no other farm	12 h 24 min
25 Jun 2025	Freyja	no other farm	15 h 59 min
24 Jun 2025	Freyja	no other farm	19 h 11 min
23 Jun 2025	Freyja	no other farm	7 h 56 min
21 Jun 2025	Freyja	no other farm	12 h 53 min
20 Jun 2025	Freyja	no other farm	1 h 44 min
19 Jun 2025	Freyja	no other farm	17 h 53 min
18 Jun 2025	Freyja	no other farm	11 h 31 min
17 Jun 2025	Freyja	no other farm	16 h 11 min
16 Jun 2025	Freyja	no other farm	16 h 47 min
15 Jun 2025	Freyja	no other farm	15 h 46 min
16 Apr 2025	Ronja Evolution	Verpeide	1 h 17 min
03 Jan 2025	Ronja Havsoy	no other farm	6 h 2 min
23 Dec 2024	Ronja Mistral	Grøttingsøy	1 h 49 min
22 Dec 2024	Ronja Mistral	Grøttingsøy	38 min
22 Dec 2024	Ronja Evolution	Slettholmene	1 h 37 min
21 Dec 2024	Ronja Havsoy	Mulnesodden	2 h 32 min
20 Dec 2024	Ronja Evolution	Slettholmene	2 h 15 min
18 Dec 2024	Ronja Evolution	Slettholmene	2 h 54 min
01 Jul 2024	Norwegian Gannet	no other farm	19 h 4 min
20 May 2024	Freyja	Munkskjæra	21 h 22 min
19 May 2024	Freyja	Munkskjæra	2 h 8 min
19 May 2024	Freyja	Munkskjæra	10 h 33 min
18 May 2024	Freyja	Munkskjæra	9 h 25 min
08 May 2024	Froy Jarl	Ulvan	3 h 4 min
07 May 2024	Freyja	Munkskjæra	3 h 21 min
07 May 2024	Froy Jarl	Ulvan	2 h 16 min
07 May 2024	Froy Jarl	Ulvan	4 h 52 min
07 May 2024	Freyja	Korsholman	2 h 50 min
06 May 2024	Froy Jarl	Ulvan	5 h 39 min
10 Apr 2024	Freyja	no other farm	8 h 47 min
09 Apr 2024	Freyja	no other farm	19 h 17 min
08 Apr 2024	Freyja	no other farm	13 h 12 min
01 Apr 2024	Froy Jarl	Ulvan	3 h 7 min
09 Mar 2024	Freyja	Ulvan	47 h 35 min
09 Mar 2024	Freyja	Ulvan	1 h 28 min
08 Mar 2024	Freyja	Oløya N	15 h 11 min
07 Mar 2024	Freyja	Oløya N	14 h 18 min
18 Feb 2024	Freyja	Leite	59 h 11 min
17 Feb 2024	Freyja	Leite	11 h 34 min

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

Licences

Site MAB: 7,020 tonnes

Licence	Type	Capacity	Holder
ST F 0001	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
ST F 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,313 t	Mowi Seawater Norway AS
ST F 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
ST F 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
ST F 0012	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
ST F 0015	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
ST F 0029	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
ST F 0032	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS
ST H 0047	Kommersiell / matfiskSalmon, Rainbow trout, Trout	788 t	Mowi Seawater Norway AS

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