Tranøya N

Site 32717 · Ørland municipality · Production area 6, Nordmøre og Sør-Trøndelag

Below the lice limit, week 39Operated by Mowi ASA · group Mowi

Broodstock site: the limit may differ from the general one.

0.13Adult 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 15 weeks with a count · broodstock: limit may differCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

3Lice treatments in 2026Latest: Freshwater treatment, week 34, 20262026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Active disease casesNone active · 1 earlierRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

2Wellboat visits in 2026by 1 vessel · latest 23 Aug 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. Broodstock site: the limit may differ from the general one.

2026

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026Broodstock site: the limit may differ from the general one.

Show as table

Adult female lice per fish per week, 2026
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	0.00	0.5	Below the limit
26	0.00	0.5	Below the limit
27	0.00	0.5	Below the limit
28	0.00	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.01	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	0.00	0.5	Below the limit
35	0.00	0.5	Below the limit
36	0.01	0.5	Below the limit
37	0.07	0.5	Below the limit
38	0.04	0.5	Below the limit
39	0.13	0.5	Below the limit

Earlier years

20253 of 10 weeks with a count above the limit

Show as table

Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.02	0.5	Below the limit
2	0.00	0.5	Below the limit
3	0.00	0.5	Below the limit
4	0.05	0.5	Below the limit
5	0.00	0.5	Below the limit
6	0.08	0.5	Below the limit
7	0.20	0.5	Below the limit
8	0.65	0.5	Above the limit
9	1.10	0.5	Above the limit
10	1.15	0.5	Above the limit
11	unknown	0.5	Reported without a count
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	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

20244 of 52 weeks with a count above the limit

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Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	0.00	0.5	Below the limit
2	0.06	0.5	Below the limit
3	0.10	0.5	Below the limit
4	0.10	0.5	Below the limit
5	0.03	0.5	Below the limit
6	0.07	0.5	Below the limit
7	0.03	0.5	Below the limit
8	0.09	0.5	Below the limit
9	0.17	0.5	Below the limit
10	0.23	0.5	Below the limit
11	0.18	0.5	Below the limit
12	0.18	0.5	Below the limit
13	0.15	0.5	Below the limit
14	0.24	0.5	Below the limit
15	0.18	0.5	Below the limit
16	0.05	0.2	Below the limit
17	0.04	0.2	Below the limit
18	0.00	0.2	Below the limit
19	0.02	0.2	Below the limit
20	0.01	0.2	Below the limit
21	0.00	0.2	Below the limit
22	0.06	0.5	Below the limit
23	0.06	0.5	Below the limit
24	0.16	0.5	Below the limit
25	0.12	0.5	Below the limit
26	0.23	0.5	Below the limit
27	0.23	0.5	Below the limit
28	0.17	0.5	Below the limit
29	0.38	0.5	Below the limit
30	0.44	0.5	Near the limit
31	1.02	0.5	Above the limit
32	1.13	0.5	Above the limit
33	0.23	0.5	Below the limit
34	0.09	0.5	Below the limit
35	0.23	0.5	Below the limit
36	1.30	0.5	Above the limit
37	1.75	0.5	Above the limit
38	0.29	0.5	Below the limit
39	0.09	0.5	Below the limit
40	0.08	0.5	Below the limit
41	0.36	0.5	Below the limit
42	0.14	0.5	Below the limit
43	0.46	0.5	Near the limit
44	0.36	0.5	Below the limit
45	0.04	0.5	Below the limit
46	0.16	0.5	Below the limit
47	0.21	0.5	Below the limit
48	0.11	0.5	Below the limit
49	0.00	0.5	Below the limit
50	0.19	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.02	0.5	Below the limit

20230 of 14 weeks with a count above the limit (data from week 40)

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Adult female lice per fish per week, 2023
Week	Adult female lice per fish	Lice limit	Status
39	0.04	0.5	Below the limit
40	0.02	0.5	Below the limit
41	0.12	0.5	Below the limit
42	0.26	0.5	Below the limit
43	0.21	0.5	Below the limit
44	0.16	0.5	Below the limit
45	0.27	0.5	Below the limit
46	0.18	0.5	Below the limit
47	0.03	0.5	Below the limit
48	0.03	0.5	Below the limit
49	0.01	0.5	Below the limit
50	0.04	0.5	Below the limit
51	0.03	0.5	Below the limit
52	0.00	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 34, 2026
Freshwater treatmentWhole site
Week 30, 2026
Medicinal feedWhole site · Emamectin benzoat
Week 29, 2026
Medicinal feedWhole site · Emamectin benzoat
Week 48, 2024
Thermal delousing3 pens

Show all 16

Week 45, 2024
Medicinal bath1 pen · Azamethiphos
Week 44, 2024
Medicinal bath3 pens · Azamethiphos
Week 42, 2024
Mechanical delousing4 pens
Week 38, 2024
Mechanical delousing6 pens
Week 36, 2024
Mechanical delousingWhole site
Week 33, 2024
Mechanical delousingWhole site
Week 30, 2024
Mechanical delousing5 pens
Week 27, 2024
Mechanical delousingWhole site
Week 23, 2024
Mechanical delousingWhole site
Week 15, 2024
Thermal delousing5 pens
Week 47, 2023
Mechanical delousingWhole site
Week 43, 2023
Thermal delousingWhole site

Disease

Norwegian Food Safety Authority

19 Jun 2025
Bacterial kidney disease (BKD): closedstarted 26 Feb 2025 · Norwegian Food Safety Authority

Escapes

Directorate of Fisheries

No escapes reported from this site since 2006.

Wellboat visits

2 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
23 Aug 2026	Froy Saga	Indre Skjervøy	17 h 54 min
22 Aug 2026	Froy Saga	Indre Skjervøy	11 h 18 min
16 Mar 2025	Ronja Skilsoy	Hendneset	12 h 18 min
09 Mar 2025	Ronja Skilsoy	Brettingen disease or zone there	4 h 52 min
09 Mar 2025	Ronja Skilsoy	Brettingen disease or zone there	2 h 8 min
14 Dec 2024	Freyja	Havsundet	1 h 36 min
29 Nov 2024	Freyja	Bremnessvaet	18 h 4 min
28 Nov 2024	Freyja	Bremnessvaet	12 h 32 min
04 Nov 2024	Froy Jarl	Brettingen	41 min
04 Nov 2024	Froy Jarl	Brettingen	3 h 10 min
04 Nov 2024	Froy Jarl	Brettingen	4 h 28 min
02 Nov 2024	Froy Jarl	Brettingen	6 h 2 min

Show 24 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
02 Nov 2024	Froy Jarl	Brettingen	5 h 3 min
16 Oct 2024	Froy Jarl	Hendneset	14 h 54 min
15 Oct 2024	Froy Jarl	Hendneset	9 h 59 min
14 Oct 2024	Froy Jarl	Hendneset	2 h 42 min
13 Oct 2024	Froy Jarl	Bremnessvaet	6 h 21 min
22 Sep 2024	Froy Jarl	Brettingen	16 h 3 min
21 Sep 2024	Froy Jarl	Brettingen	10 h 35 min
20 Sep 2024	Froy Jarl	Brettingen	11 h 13 min
19 Sep 2024	Froy Jarl	Brettingen	11 h 26 min
08 Sep 2024	Froy Jarl	Bremnessvaet	19 h 8 min
07 Sep 2024	Froy Jarl	Bremnessvaet	16 h 32 min
17 Aug 2024	Froy Jarl	Nørholmen	11 h 40 min
16 Aug 2024	Froy Jarl	Nørholmen	11 h 54 min
15 Aug 2024	Froy Jarl	Nørholmen	11 h 45 min
14 Aug 2024	Froy Jarl	Nørholmen	9 h 53 min
25 Jul 2024	Froy Jarl	Flatøyfjorden	3 h 48 min
25 Jul 2024	Froy Jarl	Flatøyfjorden	5 h 48 min
24 Jul 2024	Froy Jarl	Flatøyfjorden	17 h 11 min
05 Jul 2024	Froy Jarl	Bremnessvaet	30 h 52 min
15 Apr 2024	Freyja	Mannbruholmen	4 h 18 min
14 Apr 2024	Freyja	Mannbruholmen	8 h 17 min
14 Apr 2024	Freyja	Mannbruholmen	49 min
13 Apr 2024	Freyja	Mannbruholmen	7 h 50 min
12 Apr 2024	Freyja	Mannbruholmen	17 h 23 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
ST B 0008	Kommersiell / stamfiskSalmon	780 t	Mowi ASA
ST B 0014	Kommersiell / stamfiskSalmon	780 t	Mowi ASA
ST B 0015	Kommersiell / stamfiskSalmon	780 t	Mowi ASA

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