Harbakholmen

Site 36617 · Nærøysund municipality · Production area 7, Nord-Trøndelag med Bindal

Below the lice limit, week 39Operated by Emilsen Havbruk AS · group unknown

0.00Adult 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 4 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

0Lice treatments in 2026None recorded2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Active disease casesNone recordedRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

4Wellboat visits in 2026by 2 different vessels · latest 20 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	0.48	0.5	Near the limit
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	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	0.00	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.00	0.5	Below the limit

Earlier years

20251 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	0.04	0.5	Below the limit
2	0.04	0.5	Below the limit
3	0.17	0.5	Below the limit
4	0.08	0.5	Below the limit
5	0.15	0.5	Below the limit
6	0.09	0.5	Below the limit
7	0.14	0.5	Below the limit
8	0.17	0.5	Below the limit
9	0.11	0.5	Below the limit
10	0.15	0.5	Below the limit
11	0.13	0.5	Below the limit
12	0.23	0.5	Below the limit
13	0.14	0.5	Below the limit
14	0.23	0.5	Below the limit
15	0.03	0.5	Below the limit
16	0.00	0.2	Below the limit
17	0.01	0.2	Below the limit
18	0.03	0.2	Below the limit
19	0.02	0.2	Below the limit
20	0.06	0.2	Below the limit
21	0.04	0.2	Below the limit
22	0.11	0.5	Below the limit
23	0.08	0.5	Below the limit
24	0.13	0.5	Below the limit
25	0.26	0.5	Below the limit
26	0.41	0.5	Near the limit
27	0.08	0.5	Below the limit
28	0.30	0.5	Below the limit
29	0.10	0.5	Below the limit
30	0.18	0.5	Below the limit
31	0.10	0.5	Below the limit
32	0.20	0.5	Below the limit
33	0.14	0.5	Below the limit
34	1.00	0.5	Above the limit
35	0.47	0.5	Near the limit
36	0.21	0.5	Below the limit
37	0.21	0.5	Below the limit
38	0.20	0.5	Below the limit
39	0.24	0.5	Below the limit
40	0.14	0.5	Below the limit
41	0.17	0.5	Below the limit
42	0.26	0.5	Below the limit
43	0.27	0.5	Below the limit
44	0.15	0.5	Below the limit
45	0.15	0.5	Below the limit
46	0.13	0.5	Below the limit
47	0.11	0.5	Below the limit
48	0.11	0.5	Below the limit
49	0.15	0.5	Below the limit
50	0.19	0.5	Below the limit
51	0.30	0.5	Below the limit
52	0.42	0.5	Near the limit

20240 of 22 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	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	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	0.00	0.5	Below the limit
32	0.00	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	0.01	0.5	Below the limit
37	0.04	0.5	Below the limit
38	0.00	0.5	Below the limit
39	0.01	0.5	Below the limit
40	0.02	0.5	Below the limit
41	0.00	0.5	Below the limit
42	0.00	0.5	Below the limit
43	0.07	0.5	Below the limit
44	0.06	0.5	Below the limit
45	0.06	0.5	Below the limit
46	0.02	0.5	Below the limit
47	0.02	0.5	Below the limit
48	0.02	0.5	Below the limit
49	0.01	0.5	Below the limit
50	0.02	0.5	Below the limit
51	0.03	0.5	Below the limit
52	0.06	0.5	Below the limit

20230 of 18 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
34	0.18	0.5	Below the limit
35	0.16	0.5	Below the limit
36	0.38	0.5	Below the limit
37	0.38	0.5	Below the limit
38	0.17	0.5	Below the limit
39	0.32	0.5	Below the limit
40	0.45	0.5	Near the limit
41	0.43	0.5	Near the limit
42	0.45	0.5	Near the limit
43	0.19	0.5	Below the limit
44	0.18	0.5	Below the limit
45	0.20	0.5	Below the limit
46	0.07	0.5	Below the limit
47	0.08	0.5	Below the limit
48	0.28	0.5	Below the limit
49	0.15	0.5	Below the limit
50	0.25	0.5	Below the limit
51	0.20	0.5	Below the limit
52	unknown	0.5	Not reported

Treatments

Norwegian Food Safety Authority

Week 46, 2025
Mechanical delousingWhole site
Week 44, 2025
Mechanical delousing2 pens
Week 42, 2025
Mechanical delousingWhole site
Week 40, 2025
Mechanical delousingWhole site

Show all 20

Week 36, 2025
Freshwater treatment, Mechanical delousingWhole site
Week 35, 2025
Mechanical delousingWhole site
Week 31, 2025
Mechanical delousingWhole site
Week 29, 2025
Other treatmentWhole site · Ferskvann og Freshwell · Ferskvann og Wellfighter
Week 27, 2025
Mechanical delousingWhole site
Week 25, 2025
Mechanical delousingWhole site
Week 16, 2025
Medicinal feed3 pens · Emamectin benzoat
Week 15, 2025
Medicinal feed, Thermal delousing, Freshwater treatment11 pens · Emamectin benzoat
Week 14, 2025
Freshwater treatment, Thermal delousing6 pens
Week 39, 2024
Medicinal feed4 pens · Emamectin benzoat
Week 38, 2024
Medicinal feed4 pens · Emamectin benzoat
Week 46, 2023
Mechanical delousingWhole site
Week 43, 2023
Mechanical delousingWhole site
Week 41, 2023
Mechanical delousingWhole site
Week 38, 2023
Thermal delousingWhole site
Week 37, 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

No escapes reported from this site since 2006.

Wellboat visits

4 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
20 Jan 2026	Aasvaerfjord	Marøya	1 h 23 min
20 Jan 2026	Aasvaerfjord	Marøya	3 h 18 min
13 Jan 2026	Ronja Explorer	Marøya	2 h 17 min
06 Jan 2026	Ronja Explorer	Marøya	2 h 47 min
21 Dec 2025	Ronja Explorer	Marøya	2 h 40 min
10 Nov 2025	Ronja Explorer	Marøya	2 h 17 min
10 Nov 2025	Ronja Explorer	Marøya	1 h 3 min
29 Sep 2025	Ronja Explorer	Marøya	2 h 27 min
07 Sep 2025	Ronja Ocean	Marøya	24 h 32 min
06 Sep 2025	Ronja Ocean	Marøya	22 h 33 min
17 Jul 2025	Ronja Naeroeysund	Kvaløya	16 h 50 min
16 Jul 2025	Ronja Naeroeysund	Kvaløya	6 h 47 min

Show 15 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
16 Jul 2025	Ronja Naeroeysund	Kvaløya	2 h 14 min
15 Jul 2025	Ronja Naeroeysund	Kvaløya	4 h 18 min
08 Apr 2025	Ronja Ocean	Kvaløya	3 h 9 min
07 Apr 2025	Ronja Ocean	Kvaløya	16 h 21 min
02 Apr 2025	Ronja Ocean	Marøya	25 h 16 min
28 Jan 2025	Ronja Ocean	Kvaløya	2 h 50 min
28 Jan 2025	Ronja Ocean	Kvaløya	3 h 0 min
27 Jan 2025	Ronja Ocean	Hellerflesa	11 h 27 min
21 Sep 2024	Viknatrans	Tosen	2 h 20 min
20 Sep 2024	Ronja Vita	Kråkøya	4 h 54 min
19 Sep 2024	Ronja Vita	Kråkøya	1 h 44 min
18 Sep 2024	Ronja Vita	Kråkøya	1 h 59 min
09 Aug 2024	Viknatrans	Tosen	59 min
04 Aug 2024	Viknatrans	Kråkholmen	1 h 19 min
03 Aug 2024	Viknatrans	Kråkholmen	1 h 2 min

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

Licences

Site MAB: 1,560 tonnes

Licence	Type	Capacity	Holder
NT LA 0018	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Emilsen Havbruk AS
NT NR 0007	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Sinkaberg Havbruk AS
NT NR 0057	Kommersiell / matfiskSalmon, Rainbow trout, Trout	804 t	Emilsen Havbruk AS
NT V 0008	Kommersiell / matfiskSalmon, Rainbow trout, Trout	812 t	Emilsen Havbruk AS
NT V 0009	Kommersiell / matfiskSalmon, Rainbow trout, Trout	806 t	AS Aqua
TR ND 0003	Kommersiell / matfiskSalmon, Rainbow trout, Trout	400 t	Emilsen Havbruk AS
TR ND 0018	Undervisning / matfiskSalmon, Rainbow trout, Trout	780 t	Trøndelag Fylkeskommune

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