Langskjæran

Site 28036 · Gildeskål 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 32, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

1Weeks above the limit in 2026of 32 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

6Lice treatments in 2026Latest: Mechanical delousing, week 29, 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

9Wellboat visits in 2026by 4 different vessels · latest 27 Jun 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 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	0.26	0.5	Below the limit
2	0.17	0.5	Below the limit
3	0.28	0.5	Below the limit
4	0.25	0.5	Below the limit
5	0.02	0.5	Below the limit
6	0.02	0.5	Below the limit
7	0.03	0.5	Below the limit
8	0.05	0.5	Below the limit
9	0.06	0.5	Below the limit
10	0.17	0.5	Below the limit
11	0.09	0.5	Below the limit
12	0.21	0.5	Below the limit
13	0.20	0.5	Below the limit
14	0.22	0.5	Below the limit
15	0.21	0.5	Below the limit
16	0.11	0.5	Below the limit
17	0.11	0.5	Below the limit
18	0.13	0.5	Below the limit
19	0.32	0.5	Below the limit
20	0.17	0.5	Below the limit
21	0.18	0.2	Near the limit
22	0.03	0.2	Below the limit
23	0.07	0.2	Below the limit
24	0.14	0.2	Below the limit
25	0.09	0.2	Below the limit
26	0.24	0.2	Above the limit
27	0.27	0.5	Below the limit
28	0.43	0.5	Near the limit
29	0.26	0.5	Below the limit
30	0.37	0.5	Below the limit
31	0.46	0.5	Near the limit
32	0.00	0.5	Below the limit
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

20251 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	Reported without a count
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	0.01	0.2	Below the limit
24	0.00	0.2	Below the limit
25	0.13	0.2	Below the limit
26	0.02	0.2	Below the limit
27	0.09	0.5	Below the limit
28	0.05	0.5	Below the limit
29	0.16	0.5	Below the limit
30	0.04	0.5	Below the limit
31	0.12	0.5	Below the limit
32	0.14	0.5	Below the limit
33	0.04	0.5	Below the limit
34	0.15	0.5	Below the limit
35	0.37	0.5	Below the limit
36	0.04	0.5	Below the limit
37	0.07	0.5	Below the limit
38	0.23	0.5	Below the limit
39	0.33	0.5	Below the limit
40	0.12	0.5	Below the limit
41	0.19	0.5	Below the limit
42	0.22	0.5	Below the limit
43	0.91	0.5	Above the limit
44	0.16	0.5	Below the limit
45	0.26	0.5	Below the limit
46	0.33	0.5	Below the limit
47	0.46	0.5	Near the limit
48	0.48	0.5	Near the limit
49	0.07	0.5	Below the limit
50	0.05	0.5	Below the limit
51	0.04	0.5	Below the limit
52	0.16	0.5	Below the limit

20241 of 42 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	0.15	0.5	Below the limit
2	0.24	0.5	Below the limit
3	0.24	0.5	Below the limit
4	0.26	0.5	Below the limit
5	0.14	0.5	Below the limit
6	0.11	0.5	Below the limit
7	0.13	0.5	Below the limit
8	0.15	0.5	Below the limit
9	0.13	0.5	Below the limit
10	0.18	0.5	Below the limit
11	0.20	0.5	Below the limit
12	0.22	0.5	Below the limit
13	0.27	0.5	Below the limit
14	0.33	0.5	Below the limit
15	0.21	0.5	Below the limit
16	0.20	0.5	Below the limit
17	0.14	0.5	Below the limit
18	0.17	0.5	Below the limit
19	0.20	0.5	Below the limit
20	0.15	0.5	Below the limit
21	0.10	0.2	Below the limit
22	0.12	0.2	Below the limit
23	0.17	0.2	Near the limit
24	0.18	0.2	Near the limit
25	0.18	0.2	Near the limit
26	0.08	0.2	Below the limit
27	0.13	0.5	Below the limit
28	0.19	0.5	Below the limit
29	0.40	0.5	Near the limit
30	0.34	0.5	Below the limit
31	0.35	0.5	Below the limit
32	0.14	0.5	Below the limit
33	0.16	0.5	Below the limit
34	0.38	0.5	Below the limit
35	1.40	0.5	Above the limit
36	0.20	0.5	Below the limit
37	0.41	0.5	Near the limit
38	0.30	0.5	Below the limit
39	0.16	0.5	Below the limit
40	0.25	0.5	Below the limit
41	0.49	0.5	Near the limit
42	0.26	0.5	Below the limit
43	unknown	0.5	Reported without a count
44	unknown	0.5	Reported without a count
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	0.17	0.5	Below the limit
41	0.15	0.5	Below the limit
42	0.03	0.5	Below the limit
43	0.03	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.08	0.5	Below the limit
46	0.05	0.5	Below the limit
47	0.08	0.5	Below the limit
48	0.05	0.5	Below the limit
49	0.08	0.5	Below the limit
50	0.13	0.5	Below the limit
51	0.18	0.5	Below the limit
52	0.27	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 29, 2026
Mechanical delousing1 pen
Week 26, 2026
Mechanical delousing2 pens
Week 22, 2026
Mechanical delousing4 pens
Week 19, 2026
Mechanical delousing5 pens

Show all 29

Week 4, 2026
Mechanical delousingWhole site
Week 1, 2026
Thermal delousingWhole site
Week 49, 2025
Mechanical delousing5 pens
Week 48, 2025
Mechanical delousing1 pen
Week 44, 2025
Thermal delousingWhole site
Week 40, 2025
Thermal delousing3 pens
Week 39, 2025
Thermal delousing3 pens
Week 36, 2025
Thermal delousing3 pens
Week 35, 2025
Thermal delousing3 pens
Week 32, 2025
Thermal delousingWhole site
Week 25, 2025
Medicinal feed2 pens · Emamectin benzoat
Week 24, 2025
Medicinal feedWhole site · Emamectin benzoat
Week 41, 2024
Thermal delousing2 pens
Week 38, 2024
Thermal delousing5 pens
Week 36, 2024
Mechanical delousingWhole site
Week 32, 2024
Thermal delousing8 pens
Week 31, 2024
Mechanical delousing3 pens
Week 29, 2024
Mechanical delousing8 pens
Week 28, 2024
Mechanical delousing1 pen
Week 25, 2024
Mechanical delousingWhole site
Week 21, 2024
Thermal delousing2 pens
Week 4, 2024
Medicinal bath5 pens · Imidakloprid
Week 48, 2023
Thermal delousing6 pens
Week 42, 2023
Medicinal bath2 pens · Azamethiphos
Week 40, 2023
Medicinal feed3 pens · Emamectin benzoat

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

No escapes reported from this site since 2006.

Wellboat visits

9 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
27 Jun 2026	Steinar Olaisen	Kariskjæret	7 h 30 min
25 Jun 2026	Ronja Havsoy	Hestøy	3 h 7 min
23 Jun 2026	Ronja Havsoy	Hestøy	4 h 4 min
21 Jun 2026	Ronja Havsoy	Hestøy	2 h 53 min
09 May 2026	Steinar Olaisen	no other farm	9 h 13 min
08 May 2026	Steinar Olaisen	no other farm	5 h 36 min
24 Jan 2026	Ronja Heroy	Ramstadholmen	10 h 46 min
23 Jan 2026	Ronja Heroy	Ramstadholmen	18 h 27 min
02 Jan 2026	Ro North	no other farm	42 h 4 min
05 Dec 2025	Ronja Heroy	Sandskjæret	9 h 38 min
04 Dec 2025	Ronja Heroy	Sandskjæret	17 h 33 min
24 Nov 2025	Ronja Heroy	Nordfugløy	9 h 43 min

Show 29 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
28 Oct 2025	Ro North	Nordfugløy	9 h 3 min
27 Oct 2025	Ro North	Nordfugløy	14 h 37 min
28 Sep 2025	Ro North	Hestøy	28 h 13 min
01 Sep 2025	Ro North	Hestøy	12 h 26 min
31 Aug 2025	Ro North	Hestøy	12 h 31 min
09 Aug 2025	Ro North	Hestøy	12 h 14 min
08 Aug 2025	Ro North	Hestøy	17 h 32 min
28 Apr 2025	Ro Master	Geitryggen	2 h 21 min
26 Apr 2025	Ro Master	Geitryggen	2 h 19 min
21 Apr 2025	Ronja Havsoy	Nordfugløy	2 h 3 min
24 Oct 2024	Ro Master	Korsvika	3 h 39 min
19 Oct 2024	Ro North	Ramnøya N	2 h 29 min
03 Oct 2024	Ro Master	Hestøy	3 h 14 min
23 Sep 2024	Ronja Maloy	Storskjæret	5 h 21 min
22 Sep 2024	Ronja Maloy	Storskjæret	21 h 30 min
21 Sep 2024	Ronja Maloy	Storskjæret	13 h 45 min
15 Sep 2024	Ronja Maloy	Storvika V	9 h 13 min
14 Sep 2024	Ronja Maloy	Storvika V	52 min
21 Aug 2024	Ronja Maloy	Børøya Slaktemerd disease or zone there	7 h 44 min
14 Aug 2024	Ronja Maloy	Hestøy	4 h 11 min
10 Aug 2024	Ro Venture	Linesvika	36 h 11 min
21 Jun 2024	Ro North	Nordfugløy	11 h 7 min
20 Jun 2024	Ro North	Nordfugløy	5 h 19 min
20 Jun 2024	Ro North	Nordfugløy	10 h 48 min
19 Jun 2024	Ro North	Nordfugløy	11 h 38 min
20 May 2024	Ro North	Lian	10 h 32 min
26 Jan 2024	Ro North	Nordfugløy	13 h 25 min
25 Jan 2024	Ro North	Nordfugløy	10 h 48 min
24 Jan 2024	Ro North	Nordfugløy	2 h 19 min

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

Licences

Site MAB: 3,900 tonnes

Licence	Type	Capacity	Holder
N AH 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N BR 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N BR 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N BR 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N BR 0017	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N DA 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N DA 0004	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N DA 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N L 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS
N SA 0005	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Mowi Seawater Norway AS

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