Duesund

Site 11644 · Masfjorden municipality · Production area 4, Nordhordland til Stadt

Below the lice limit, week 39Operated by Engesund Fiskeoppdrett AS · group unknown

0.33Adult 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 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

2Lice treatments in 2026Latest: Thermal delousing, week 12, 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 5 different vessels · latest 19 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 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	0.28	0.5	Below the limit
2	0.43	0.5	Near the limit
3	0.45	0.5	Near the limit
4	0.08	0.5	Below the limit
5	0.08	0.5	Below the limit
6	0.10	0.5	Below the limit
7	0.20	0.5	Below the limit
8	0.20	0.5	Below the limit
9	0.17	0.5	Below the limit
10	0.33	0.5	Below the limit
11	0.40	0.5	Near the limit
12	0.00	0.5	Below the limit
13	0.00	0.5	Below the limit
14	0.00	0.5	Below the limit
15	0.08	0.5	Below the limit
16	0.13	0.2	Below the limit
17	0.13	0.2	Below the limit
18	0.00	0.2	Below the limit
19	0.00	0.2	Below the limit
20	0.08	0.2	Below the limit
21	0.10	0.2	Below the limit
22	0.00	0.5	Below the limit
23	0.00	0.5	Below the limit
24	0.07	0.5	Below the limit
25	0.08	0.5	Below the limit
26	0.10	0.5	Below the limit
27	0.08	0.5	Below the limit
28	0.05	0.5	Below the limit
29	0.05	0.5	Below the limit
30	0.20	0.5	Below the limit
31	0.15	0.5	Below the limit
32	0.17	0.5	Below the limit
33	0.05	0.5	Below the limit
34	0.17	0.5	Below the limit
35	0.08	0.5	Below the limit
36	0.15	0.5	Below the limit
37	0.10	0.5	Below the limit
38	0.20	0.5	Below the limit
39	0.33	0.5	Below the limit

Earlier years

20255 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	0.13	0.5	Below the limit
2	0.13	0.5	Below the limit
3	0.10	0.5	Below the limit
4	0.20	0.5	Below the limit
5	0.17	0.5	Below the limit
6	0.23	0.5	Below the limit
7	0.20	0.5	Below the limit
8	0.05	0.5	Below the limit
9	0.08	0.5	Below the limit
10	0.33	0.5	Below the limit
11	0.38	0.5	Below the limit
12	0.38	0.5	Below the limit
13	0.40	0.5	Near the limit
14	0.38	0.5	Below the limit
15	0.59	0.5	Above the limit
16	0.47	0.2	Above the limit
17	0.00	0.2	Below the limit
18	0.01	0.2	Below the limit
19	0.01	0.2	Below the limit
20	0.01	0.2	Below the limit
21	0.04	0.2	Below the limit
22	0.07	0.5	Below the limit
23	0.05	0.5	Below the limit
24	0.08	0.5	Below the limit
25	0.13	0.5	Below the limit
26	0.10	0.5	Below the limit
27	0.08	0.5	Below the limit
28	0.45	0.5	Near the limit
29	0.46	0.5	Near the limit
30	0.45	0.5	Near the limit
31	0.88	0.5	Above the limit
32	0.80	0.5	Above the limit
33	0.03	0.5	Below the limit
34	0.32	0.5	Below the limit
35	0.30	0.5	Below the limit
36	0.45	0.5	Near the limit
37	0.45	0.5	Near the limit
38	0.47	0.5	Near the limit
39	2.47	0.5	Above the limit
40	0.11	0.5	Below the limit
41	0.20	0.5	Below the limit
42	0.20	0.5	Below the limit
43	0.33	0.5	Below the limit
44	0.35	0.5	Below the limit
45	0.45	0.5	Near the limit
46	0.40	0.5	Near the limit
47	0.43	0.5	Near the limit
48	0.10	0.5	Below the limit
49	0.17	0.5	Below the limit
50	0.13	0.5	Below the limit
51	0.27	0.5	Below the limit
52	0.30	0.5	Below the limit

20240 of 11 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	0.36	0.5	Below the limit
2	0.20	0.5	Below the limit
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	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	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.10	0.5	Below the limit
47	0.00	0.5	Below the limit
48	0.10	0.5	Below the limit
49	0.05	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

20230 of 12 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	0.09	0.5	Below the limit
41	0.06	0.5	Below the limit
42	0.28	0.5	Below the limit
43	0.43	0.5	Near the limit
44	0.39	0.5	Below the limit
45	0.25	0.5	Below the limit
46	0.33	0.5	Below the limit
47	0.43	0.5	Near the limit
48	0.41	0.5	Near the limit
49	0.30	0.5	Below the limit
50	0.38	0.5	Below the limit
51	0.31	0.5	Below the limit
52	unknown	0.5	Reported without a count

Treatments

Norwegian Food Safety Authority

Week 12, 2026
Thermal delousingWhole site
Week 4, 2026
Thermal delousing2 pens
Week 48, 2025
Thermal delousingWhole site
Week 40, 2025
Thermal delousingWhole site

Show all 7

Week 33, 2025
Thermal delousingWhole site
Week 17, 2025
Thermal delousingWhole site
Week 45, 2023
Thermal delousing1 pen

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
19 Jun 2026	Langsund	Ådnekvamme	1 h 30 min
17 Mar 2026	Hordagut	Øklandsvågen	7 h 45 min
04 Mar 2026	Rohav	Nesevågen	5 h 14 min
03 Mar 2026	Rohav	Hovden	1 h 18 min
23 Feb 2026	Robas	Skaganeset	1 h 49 min
17 Feb 2026	Rohav	Hisdalen	1 h 10 min
22 Jan 2026	Horda Pioneer	Fiksneset	13 h 53 min
09 Jan 2026	Langsund	Dyrholmen V	3 h 20 min
29 Dec 2025	Langsund	Mjølsvik	10 h 30 min
15 Dec 2025	Rostein	Skaganeset	2 h 12 min
29 Nov 2025	Hordagut	Andal	7 h 2 min
28 Nov 2025	Hordagut	Andal	6 h 39 min

Show 5 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
02 Oct 2025	Hordagut	Gråvika	27 h 11 min
16 Aug 2025	Hordagut	Uføro disease or zone there	13 h 24 min
22 Apr 2025	Horda Pioneer	Nebbo	7 h 20 min
25 Nov 2024	Langsund	Rindarøy	4 h 29 min
21 Oct 2024	Langsund	Dyvika	3 h 55 min

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

Who has reported

The companies that have submitted lice counts for this site, with the first and last week.

Company	From	To
Engesund Fiskeoppdrett AS	Week 40, 2023	Week 39, 2026
Sandnes Fiskeoppdrett AS	Week 14, 2025	Week 49, 2025

Source: Norwegian Food Safety Authority (organisation number on each lice report)

Licences

Site MAB: 3,120 tonnes

Licence	Type	Capacity	Holder
H AM 0002	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Kobbevik Og Furuholmen Oppdrett AS
H FJ 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Engesund Fiskeoppdrett AS
H FJ 0023	Visning / matfiskSalmon, Rainbow trout, Trout	780 t	Engesund Fiskeoppdrett AS
H MF 0907	Kommersiell / alger til fôr/konsumSukkertare (oppdrett)	unknown	Engesund Fiskeoppdrett AS
H MF 0908	Kommersiell / alger til fôr/konsumButare	unknown	Engesund Fiskeoppdrett AS
H MF 0909	Kommersiell / alger til fôr/konsumFingertare	unknown	Engesund Fiskeoppdrett AS
H MF 0910	Kommersiell / alger til fôr/konsumSøl	unknown	Engesund Fiskeoppdrett AS
H MF 0911	Kommersiell / alger til fôr/konsumHavsalat	unknown	Engesund Fiskeoppdrett AS
H MF 0912	Kommersiell / alger til fôr/konsumStortare	unknown	Engesund Fiskeoppdrett AS
SF FL 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Sandnes Fiskeoppdrett AS
SF G 0010	Kommersiell / matfiskSalmon, Rainbow trout, Trout	648 t	Firda Havbruk AS

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