Brattholmen

Site 11015 · Herøy i Nordland municipality · Production area 8, Helgeland til Bodø

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 30, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 30 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

7Lice treatments in 2026Latest: Mechanical delousing, week 24, 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

19Wellboat visits in 2026by 4 different vessels · latest 22 Jul 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

2Escapes reported1-10 salmon, May 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 21–26 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	0.46	0.5	Near the limit
2	0.46	0.5	Near the limit
3	0.06	0.5	Below the limit
4	0.06	0.5	Below the limit
5	0.11	0.5	Below the limit
6	0.19	0.5	Below the limit
7	0.20	0.5	Below the limit
8	0.33	0.5	Below the limit
9	0.28	0.5	Below the limit
10	0.39	0.5	Below the limit
11	0.34	0.5	Below the limit
12	0.34	0.5	Below the limit
13	0.23	0.5	Below the limit
14	0.26	0.5	Below the limit
15	0.31	0.5	Below the limit
16	0.41	0.5	Near the limit
17	0.45	0.5	Near the limit
18	0.13	0.5	Below the limit
19	0.03	0.5	Below the limit
20	0.03	0.5	Below the limit
21	0.03	0.2	Below the limit
22	0.06	0.2	Below the limit
23	0.07	0.2	Below the limit
24	0.02	0.2	Below the limit
25	0.08	0.2	Below the limit
26	0.13	0.2	Below the limit
27	0.20	0.5	Below the limit
28	0.29	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	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

20250 of 35 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	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	0.5	Not reported
17	unknown	0.5	Not reported
18	0.00	0.5	Below the limit
19	0.00	0.5	Below the limit
20	0.00	0.5	Below the limit
21	0.00	0.2	Below the limit
22	0.00	0.2	Below the limit
23	0.00	0.2	Below the limit
24	0.00	0.2	Below the limit
25	0.00	0.2	Below the limit
26	0.00	0.2	Below the limit
27	0.02	0.5	Below the limit
28	0.01	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.00	0.5	Below the limit
31	0.00	0.5	Below the limit
32	0.01	0.5	Below the limit
33	0.00	0.5	Below the limit
34	0.02	0.5	Below the limit
35	0.05	0.5	Below the limit
36	0.24	0.5	Below the limit
37	0.36	0.5	Below the limit
38	0.07	0.5	Below the limit
39	0.16	0.5	Below the limit
40	0.21	0.5	Below the limit
41	0.31	0.5	Below the limit
42	0.37	0.5	Below the limit
43	0.11	0.5	Below the limit
44	0.38	0.5	Below the limit
45	0.31	0.5	Below the limit
46	0.39	0.5	Below the limit
47	0.03	0.5	Below the limit
48	0.03	0.5	Below the limit
49	0.11	0.5	Below the limit
50	0.07	0.5	Below the limit
51	0.12	0.5	Below the limit
52	0.21	0.5	Below the limit

20243 of 33 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	0.13	0.5	Below the limit
2	0.14	0.5	Below the limit
3	0.16	0.5	Below the limit
4	0.18	0.5	Below the limit
5	0.18	0.5	Below the limit
6	0.17	0.5	Below the limit
7	0.28	0.5	Below the limit
8	0.31	0.5	Below the limit
9	0.30	0.5	Below the limit
10	0.34	0.5	Below the limit
11	0.45	0.5	Near the limit
12	0.33	0.5	Below the limit
13	0.39	0.5	Below the limit
14	0.49	0.5	Near the limit
15	0.29	0.5	Below the limit
16	0.11	0.5	Below the limit
17	0.16	0.5	Below the limit
18	0.17	0.5	Below the limit
19	0.09	0.5	Below the limit
20	0.15	0.5	Below the limit
21	0.09	0.2	Below the limit
22	0.00	0.2	Below the limit
23	0.11	0.2	Below the limit
24	0.09	0.2	Below the limit
25	0.19	0.2	Near the limit
26	0.22	0.2	Above the limit
27	0.16	0.5	Below the limit
28	0.30	0.5	Below the limit
29	0.43	0.5	Near the limit
30	0.39	0.5	Below the limit
31	0.61	0.5	Above the limit
32	0.66	0.5	Above the limit
33	0.43	0.5	Near the limit
34	unknown	0.5	Reported without a count
35	unknown	0.5	Reported without a count
36	unknown	0.5	Reported without a count
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

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	0.03	0.5	Below the limit
41	0.09	0.5	Below the limit
42	0.12	0.5	Below the limit
43	0.13	0.5	Below the limit
44	0.46	0.5	Near the limit
45	0.05	0.5	Below the limit
46	0.24	0.5	Below the limit
47	0.23	0.5	Below the limit
48	0.21	0.5	Below the limit
49	0.04	0.5	Below the limit
50	0.12	0.5	Below the limit
51	0.12	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 19, 2026
Mechanical delousing3 pens
Week 18, 2026
Mechanical delousing5 pens
Week 13, 2026
Mechanical delousing2 pens

Show all 29

Week 12, 2026
Mechanical delousing2 pens
Week 3, 2026
Mechanical delousing3 pens
Week 1, 2026
Thermal delousing5 pens
Week 47, 2025
Mechanical delousing6 pens
Week 46, 2025
Mechanical delousing3 pens
Week 43, 2025
Thermal delousing9 pens
Week 42, 2025
Thermal delousing2 pens
Week 37, 2025
Thermal delousing4 pens
Week 26, 2025
Medicinal feedWhole site · Emamectin benzoat
Week 33, 2024
Mechanical delousing2 pens
Week 32, 2024
Mechanical delousing4 pens
Week 31, 2024
Mechanical delousing5 pens
Week 30, 2024
Mechanical delousing2 pens
Week 29, 2024
Mechanical delousing3 pens
Week 27, 2024
Mechanical delousing4 pens
Week 26, 2024
Thermal delousing5 pens
Week 22, 2024
Mechanical delousing1 pen
Week 21, 2024
Mechanical delousing8 pens
Week 15, 2024
Medicinal bath5 pens · Azamethiphos
Week 14, 2024
Medicinal bath1 pen · Azamethiphos
Week 12, 2024
Medicinal bath4 pens · Azamethiphos
Week 49, 2023
Thermal delousingWhole site
Week 45, 2023
Thermal delousing6 pens
Week 44, 2023
Thermal delousing3 pens
Week 40, 2023
Mechanical delousingWhole site

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 May 2026
1-10 salmon escapedCause: uvist · recaptured 1 · Directorate of Fisheries
18 Jun 2020
1 salmon escapedCause: Årsak ukjent - men i hullet henger det en notkrok. Dokumentasjon sikres, hull tettet umiddelbart av dykkere. · recaptured 1 · Directorate of Fisheries

Wellboat visits

19 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
22 Jul 2026	Ronja Boroy	Storvikneset	2 h 43 min
19 Jul 2026	Ronja Havsoy	Hestøy	1 h 30 min
13 Jul 2026	Ronja Boroy	Nordskaftet	2 h 11 min
18 Jun 2026	Ronja Havsoy	Hestøy	1 h 57 min
18 Jun 2026	Ronja Havsoy	Hestøy	3 h 18 min
11 Jun 2026	Ronja Havsoy	Tårnvika	2 h 36 min
09 Jun 2026	Ronja Boroy	Kalvik	42 h 49 min
07 Jun 2026	Ronja Boroy	Kalvik	30 h 34 min
05 May 2026	Ronja Heroy	Bukkholmen	3 h 7 min
04 May 2026	Ronja Heroy	Bukkholmen	14 h 36 min
03 May 2026	Ronja Heroy	Bukkholmen	12 h 9 min
30 Apr 2026	Ronja Heroy	Bukkholmen	8 h 12 min

Show 65 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
30 Apr 2026	Ronja Heroy	Bukkholmen	10 h 43 min
28 Mar 2026	Steinar Olaisen	Naustholmen	19 h 4 min
21 Mar 2026	Steinar Olaisen	Bukkholmen	16 h 7 min
15 Jan 2026	Ronja Boroy	Bukkholmen	26 h 16 min
07 Jan 2026	Ronja Boroy	Bukkholmen	5 h 52 min
05 Jan 2026	Ronja Boroy	Bukkholmen	14 h 13 min
03 Jan 2026	Ronja Boroy	Bukkholmen	42 h 39 min
19 Nov 2025	Ronja Heroy	Bukkholmen	10 h 34 min
17 Nov 2025	Ronja Heroy	Bukkholmen	27 h 7 min
17 Nov 2025	Ronja Heroy	Bukkholmen	3 h 14 min
16 Nov 2025	Ronja Heroy	Bukkholmen	2 h 15 min
16 Nov 2025	Ronja Heroy	Bukkholmen	9 h 18 min
23 Oct 2025	Ro North	Skarvhammaren	6 h 32 min
22 Oct 2025	Ro North	Skarvhammaren	21 h 4 min
20 Oct 2025	Ro North	Skarvhammaren	40 h 44 min
17 Sep 2025	Ronja Boroy	Skarvhammaren	46 h 45 min
19 May 2025	Ro Sailor	Kjeringeholmen	54 min
18 May 2025	Ro Sailor	Kjeringeholmen	4 h 26 min
03 May 2025	Ronja Havsoy	Blomsøråsa	2 h 8 min
01 May 2025	Ronja Havsoy	Blomsøråsa	2 h 30 min
30 Apr 2025	Ronja Havsoy	Blomsøråsa	2 h 8 min
30 Aug 2024	Ro Spirit	Hestøy	3 h 4 min
29 Aug 2024	Ro Spirit	Hestøy	2 h 41 min
28 Aug 2024	Ro Spirit	Hestøy	1 h 31 min
27 Aug 2024	Ro Spirit	Hestøy	2 h 19 min
23 Aug 2024	Ro Spirit	Hestøy	2 h 30 min
21 Aug 2024	Ro Spirit	Hestøy	2 h 8 min
20 Aug 2024	Ro Spirit	Hestøy	1 h 4 min
20 Aug 2024	Ro Spirit	Hestøy	3 h 19 min
18 Aug 2024	Ro Spirit	Ålvora	1 h 31 min
04 Aug 2024	Steinar Olaisen	Skonseng disease or zone there	6 h 57 min
02 Aug 2024	Steinar Olaisen	Skonseng disease or zone there	30 h 27 min
22 Jul 2024	Ro Spirit	Hestøy	1 h 55 min
21 Jul 2024	Ro Spirit	Hestøy	2 h 28 min
18 Jul 2024	Ro Spirit	Hestøy	2 h 20 min
17 Jul 2024	Robris	Bukkholmen disease or zone there	1 h 39 min
06 Jul 2024	Steinar Olaisen	Stokkasjøen disease or zone there	18 h 34 min
28 Jun 2024	Ro North	Skarvhammaren disease or zone there	5 h 52 min
26 Jun 2024	Ro North	Skarvhammaren disease or zone there	7 h 21 min
25 Jun 2024	Ro North	Skarvhammaren disease or zone there	9 h 40 min
28 May 2024	Ronja Heroy	Bukkholmen disease or zone there	23 h 37 min
26 May 2024	Ronja Heroy	Bukkholmen disease or zone there	27 h 6 min
25 May 2024	Ronja Heroy	Bukkholmen disease or zone there	4 h 51 min
23 May 2024	Ronja Heroy	Bukkholmen disease or zone there	20 h 7 min
20 May 2024	Ronja Heroy	Bukkholmen disease or zone there	19 h 24 min
20 May 2024	Ronja Heroy	Bukkholmen disease or zone there	12 h 59 min
10 Apr 2024	Ro North	Bukkholmen disease or zone there	1 h 29 min
09 Apr 2024	Ro North	Bukkholmen disease or zone there	1 h 55 min
09 Apr 2024	Ro North	Bukkholmen disease or zone there	1 h 28 min
09 Apr 2024	Ro North	Bukkholmen disease or zone there	3 h 15 min
08 Apr 2024	Ro North	Bukkholmen disease or zone there	1 h 53 min
08 Apr 2024	Ro North	Bukkholmen disease or zone there	2 h 29 min
08 Apr 2024	Ro North	Bukkholmen disease or zone there	1 h 37 min
07 Apr 2024	Ro North	Bukkholmen disease or zone there	1 h 22 min
07 Apr 2024	Ro North	Bukkholmen disease or zone there	3 h 42 min
07 Apr 2024	Ro North	Bukkholmen disease or zone there	1 h 48 min
06 Apr 2024	Ro North	Bukkholmen disease or zone there	3 h 22 min
21 Mar 2024	Ro North	Bukkholmen disease or zone there	2 h 59 min
20 Mar 2024	Ro North	Bukkholmen disease or zone there	4 h 31 min
20 Mar 2024	Ro North	Bukkholmen disease or zone there	5 h 12 min
19 Mar 2024	Ro North	Bukkholmen disease or zone there	1 h 26 min
19 Mar 2024	Ro North	Bukkholmen disease or zone there	5 h 33 min
19 Mar 2024	Ro North	Bukkholmen disease or zone there	4 h 8 min
18 Mar 2024	Ro North	Bukkholmen disease or zone there	2 h 6 min
18 Mar 2024	Ro North	Bukkholmen disease or zone there	3 h 26 min

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

Licences

Site MAB: 4,680 tonnes

Licence	Type	Capacity	Holder
N DA 0077	Undervisning / matfiskSalmon, Rainbow trout, Trout	550 t	Nordland Fylkeskommune
N HR 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N HR 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N HR 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N HR 0006	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N HR 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N HR 0012	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N HR 0014	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N HR 0016	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS

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