Havstein Sør

Site 36778 · Dønna municipality · Production area 8, Helgeland til Bodø

Near the lice limit, week 39Operated by Letsea AS

0.44Adult female lice per fishLimit 0.50 · near the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 38 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

7Wellboat visits in 2026by 3 different vessels · latest 05 Sep 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

1Escapes reported1-10 salmon, September 2021Since 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

Show as table

Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.05	0.5	Below the limit
2	0.05	0.5	Below the limit
3	0.05	0.5	Below the limit
4	0.06	0.5	Below the limit
5	0.06	0.5	Below the limit
6	0.05	0.5	Below the limit
7	0.04	0.5	Below the limit
8	0.03	0.5	Below the limit
9	0.03	0.5	Below the limit
10	0.02	0.5	Below the limit
11	unknown	0.5	Not reported
12	0.01	0.5	Below the limit
13	0.03	0.5	Below the limit
14	0.03	0.5	Below the limit
15	0.03	0.5	Below the limit
16	0.04	0.5	Below the limit
17	0.03	0.5	Below the limit
18	0.03	0.5	Below the limit
19	0.03	0.5	Below the limit
20	0.02	0.5	Below the limit
21	0.03	0.2	Below the limit
22	0.03	0.2	Below the limit
23	0.03	0.2	Below the limit
24	0.06	0.2	Below the limit
25	0.08	0.2	Below the limit
26	0.08	0.2	Below the limit
27	0.08	0.5	Below the limit
28	0.07	0.5	Below the limit
29	0.08	0.5	Below the limit
30	0.12	0.5	Below the limit
31	0.16	0.5	Below the limit
32	0.17	0.5	Below the limit
33	0.16	0.5	Below the limit
34	0.10	0.5	Below the limit
35	0.11	0.5	Below the limit
36	0.13	0.5	Below the limit
37	0.22	0.5	Below the limit
38	0.30	0.5	Below the limit
39	0.44	0.5	Near the limit

Earlier years

20250 of 23 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

Show as table

Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.33	0.5	Below the limit
2	0.43	0.5	Near the limit
3	0.40	0.5	Near the limit
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	unknown	0.5	Not reported
19	unknown	0.5	Not reported
20	unknown	0.5	Not reported
21	unknown	0.2	Not reported
22	unknown	0.2	Not reported
23	unknown	0.2	Not reported
24	unknown	0.2	Not reported
25	unknown	0.2	Not reported
26	unknown	0.2	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	0.00	0.5	Below the limit
34	0.00	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.00	0.5	Below the limit
37	0.10	0.5	Below the limit
38	0.10	0.5	Below the limit
39	0.05	0.5	Below the limit
40	0.00	0.5	Below the limit
41	0.00	0.5	Below the limit
42	0.05	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.07	0.5	Below the limit
48	0.00	0.5	Below the limit
49	0.03	0.5	Below the limit
50	0.03	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.03	0.5	Below the limit

20244 of 50 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

Show as table

Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	unknown	0.5	Reported without a count
2	0.16	0.5	Below the limit
3	0.15	0.5	Below the limit
4	0.15	0.5	Below the limit
5	unknown	0.5	Not reported
6	0.17	0.5	Below the limit
7	0.13	0.5	Below the limit
8	0.10	0.5	Below the limit
9	0.08	0.5	Below the limit
10	0.12	0.5	Below the limit
11	0.09	0.5	Below the limit
12	0.11	0.5	Below the limit
13	0.08	0.5	Below the limit
14	0.11	0.5	Below the limit
15	0.13	0.5	Below the limit
16	0.09	0.5	Below the limit
17	0.16	0.5	Below the limit
18	0.09	0.5	Below the limit
19	0.16	0.5	Below the limit
20	0.05	0.5	Below the limit
21	0.08	0.2	Below the limit
22	0.08	0.2	Below the limit
23	0.18	0.2	Near the limit
24	0.80	0.2	Above the limit
25	0.19	0.2	Near the limit
26	0.15	0.2	Below the limit
27	0.35	0.5	Below the limit
28	0.25	0.5	Below the limit
29	0.16	0.5	Below the limit
30	0.32	0.5	Below the limit
31	4.21	0.5	Above the limit
32	0.43	0.5	Near the limit
33	0.46	0.5	Near the limit
34	0.15	0.5	Below the limit
35	0.39	0.5	Below the limit
36	0.44	0.5	Near the limit
37	1.42	0.5	Above the limit
38	0.70	0.5	Above the limit
39	0.46	0.5	Near the limit
40	0.35	0.5	Below the limit
41	0.37	0.5	Below the limit
42	0.13	0.5	Below the limit
43	0.34	0.5	Below the limit
44	0.41	0.5	Near the limit
45	0.10	0.5	Below the limit
46	0.18	0.5	Below the limit
47	0.24	0.5	Below the limit
48	0.20	0.5	Below the limit
49	0.21	0.5	Below the limit
50	0.45	0.5	Near the limit
51	0.48	0.5	Near the limit
52	0.33	0.5	Below the limit

20231 of 5 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

Show as table

Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
36	0.03	0.5	Below the limit
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	0.99	0.5	Above the limit
50	0.14	0.5	Below the limit
51	0.27	0.5	Below the limit
52	0.14	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 45, 2024
Mechanical delousingWhole site
Week 42, 2024
Thermal delousingWhole site
Week 40, 2024
Mechanical delousing1 pen
Week 39, 2024
Mechanical delousing3 pens

Show all 11

Week 34, 2024
Mechanical delousingWhole site
Week 32, 2024
Mechanical delousingWhole site
Week 28, 2024
Thermal delousingWhole site
Week 25, 2024
Thermal delousing2 pens
Week 24, 2024
Thermal delousing2 pens
Week 21, 2024
Other treatment1 pen · Salmosan
Week 50, 2023
Other treatmentWhole site · Kombinasjonsbehandling med ferskvann og termisk utført med BB Færøysund fra NSS. Veldig god effekt men den største grupperingen av fisk tålte ferskvann dårlig så vi klarte ikke planlagt holdetid. Fikk allikevel godt resultat i forhold til lus og utøvd fiskevelferd.

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

12 Sep 2021
1-10 salmon escapedCause: Fisken hadde kommet seg ut gjennom rør for utskillelse av rognkjeks som lå på dekk. Brønnbåt hadde ikke sikret denne med sikkerhetsnett. Det var personell tilstede som sikret dette omgående. · Directorate of Fisheries

Wellboat visits

7 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
05 Sep 2026	Froey Viking	Naustholmen	2 h 20 min
05 Sep 2026	Froey Viking	Naustholmen	3 h 57 min
05 Sep 2026	Froey Viking	Naustholmen	2 h 10 min
25 Aug 2026	Ro Fortune	Skauholmen	8 h 16 min
14 Aug 2026	Inter Fjord	Nordskaftet	5 h 31 min
13 Aug 2026	Inter Fjord	Skauholmen	3 h 21 min
02 Jul 2026	Inter Fjord	Skauholmen	15 h 11 min
12 Dec 2025	Doennland	Varpet	3 h 59 min
03 Feb 2025	Steinar Olaisen	Børøya Slaktemerd	1 h 45 min
02 Feb 2025	Ro Sailor	Vardskjæret S	3 h 39 min
22 Jan 2025	Faeroeysund	Naustholmen	1 h 55 min
21 Jan 2025	Steinar Olaisen	Skauholmen	3 h 49 min

Show 14 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
12 Jan 2025	Steinar Olaisen	Hestøy	1 h 27 min
12 Jan 2025	Steinar Olaisen	Naustholmen	2 h 5 min
16 Oct 2024	Faeroeysund	Buktodden Nø	35 h 38 min
19 Sep 2024	Steinar Olaisen	Hestøy	9 h 32 min
19 Sep 2024	Steinar Olaisen	Hestøy	5 h 38 min
13 Jul 2024	Ro North	Slapøya N	17 h 24 min
12 Jul 2024	Ro North	Slapøya N	11 h 28 min
26 Jun 2024	Faeroeysund	Kolvikodden Ø	3 h 42 min
22 Jun 2024	Ro North	Hestøy	16 h 53 min
19 Jun 2024	Faeroeysund	Naustholmen	8 h 3 min
14 Jun 2024	Faeroeysund	Daumannsvika	6 h 50 min
19 May 2024	Faeroeysund	Slapøya N	4 h 0 min
18 May 2024	Faeroeysund	Kolvikodden Ø	3 h 3 min
18 May 2024	Faeroeysund	Kolvikodden Ø	9 h 5 min

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

Licences

Site MAB: 2,340 tonnes

Licence	Type	Capacity	Holder
N AH 0041	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Biomar A.s.
N AH 0042	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Biomar A.s.
N AH 0043	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Biomar A.s.
N AH 0048	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Letsea AS
N AH 0049	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Letsea AS
N DA 0036	Forskning / matfiskSalmon, Rainbow trout, Trout	780 t	Biomar A.s.
N DA 0077	Undervisning / matfiskSalmon, Rainbow trout, Trout	550 t	Nordland Fylkeskommune

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