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The Salmon Ledger
NOEN

Olderøy

Site 15403 · Solund municipality · Production area 4, Nordhordland til Stadt

Status unknown: not reported in week 39Operated by Mowi Seawater Norway AS · group Mowi
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unknownAdult female lice per fishNo count in week 39. Latest: 0.48 in week 45, 2025Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026
unknownWeeks above the limit in 2026No weeks with a count in 2026Calculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026
unknownLice treatments in 2026No lice reports in 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
0Wellboat visits in 2026Latest visit 17 Nov 2025Derived 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.

2025

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
WeekAdult female lice per fishLice limitStatus
10.000.5Below the limit
20.040.5Below the limit
30.040.5Below the limit
40.130.5Below the limit
50.170.5Below the limit
60.110.5Below the limit
70.190.5Below the limit
80.230.5Below the limit
90.130.5Below the limit
100.140.5Below the limit
110.260.5Below the limit
120.150.5Below the limit
130.210.5Below the limit
140.220.5Below the limit
150.040.5Below the limit
160.000.2Below the limit
170.000.2Below the limit
180.050.2Below the limit
190.060.2Below the limit
200.030.2Below the limit
210.000.2Below the limit
220.010.5Below the limit
230.000.5Below the limit
240.000.5Below the limit
250.040.5Below the limit
260.100.5Below the limit
270.430.5Near the limit
280.010.5Below the limit
290.030.5Below the limit
300.140.5Below the limit
310.390.5Below the limit
323.390.5Above the limit
330.260.5Below the limit
340.400.5Near the limit
350.400.5Near the limit
360.010.5Below the limit
370.230.5Below the limit
380.280.5Below the limit
390.040.5Below the limit
400.050.5Below the limit
410.310.5Below the limit
420.160.5Below the limit
430.390.5Below the limit
440.450.5Near the limit
450.480.5Near the limit
46unknown0.5Reported without a count
47unknown0.5Not reported
48unknown0.5Not reported
49unknown0.5Not reported
50unknown0.5Not reported
51unknown0.5Not reported
52unknown0.5Not reported

Earlier years

20240 of 29 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
WeekAdult female lice per fishLice limitStatus
10.040.5Below the limit
20.050.5Below the limit
30.070.5Below the limit
40.170.5Below the limit
50.110.5Below the limit
60.080.5Below the limit
70.160.5Below the limit
80.040.5Below the limit
90.010.5Below the limit
100.010.5Below the limit
110.040.5Below the limit
120.010.5Below the limit
130.060.5Below the limit
140.110.5Below the limit
150.080.5Below the limit
160.100.2Below the limit
170.100.2Below the limit
180.080.2Below the limit
190.070.2Below the limit
200.010.2Below the limit
210.040.2Below the limit
220.050.5Below the limit
230.400.5Near the limit
240.430.5Near the limit
25unknown0.5Not reported
26unknown0.5Not reported
27unknown0.5Not reported
28unknown0.5Not reported
29unknown0.5Not reported
30unknown0.5Not reported
31unknown0.5Not reported
32unknown0.5Not reported
33unknown0.5Not reported
34unknown0.5Not reported
35unknown0.5Not reported
36unknown0.5Not reported
37unknown0.5Not reported
38unknown0.5Not reported
39unknown0.5Not reported
40unknown0.5Not reported
41unknown0.5Not reported
42unknown0.5Not reported
43unknown0.5Not reported
44unknown0.5Not reported
45unknown0.5Not reported
46unknown0.5Not reported
47unknown0.5Reported without a count
480.000.5Below the limit
490.000.5Below the limit
500.000.5Below the limit
510.000.5Below the limit
520.000.5Below the limit
20233 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
Show as table
Adult female lice per fish per week, 2023
WeekAdult female lice per fishLice limitStatus
400.070.5Below the limit
410.100.5Below the limit
421.130.5Above the limit
430.200.5Below the limit
440.150.5Below the limit
450.330.5Below the limit
460.060.5Below the limit
470.160.5Below the limit
480.120.5Below the limit
490.130.5Below the limit
501.810.5Above the limit
513.360.5Above the limit
520.050.5Below the limit

Treatments

Norwegian Food Safety Authority
  • Week 39, 2025
    Mechanical delousingWhole site
  • Week 36, 2025
    Mechanical delousingWhole site
  • Week 33, 2025
    Thermal delousing2 pens
  • Week 28, 2025
    Mechanical delousingWhole site
Show all 16
  • Week 21, 2025
    Thermal delousingWhole site
  • Week 15, 2025
    Thermal delousing3 pens
  • Week 14, 2025
    Thermal delousing1 pen
  • Week 1, 2025
    Medicinal feed2 pens · Emamectin benzoat
  • Week 52, 2024
    Medicinal feedWhole site · Emamectin benzoat
  • Week 51, 2024
    Medicinal feed4 pens · Emamectin benzoat
  • Week 17, 2024
    Thermal delousing4 pens
  • Week 9, 2024
    Medicinal bath1 pen · Azamethiphos
  • Week 8, 2024
    Medicinal bath4 pens · Azamethiphos
  • Week 52, 2023
    Mechanical delousingWhole site
  • Week 46, 2023
    Mechanical delousingWhole site
  • Week 43, 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

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.

ArrivalVesselPrevious farm (14 days)Duration
17 Nov 2025Ro FjordRindarøy2 h 53 min
16 Nov 2025Ro FjordRindarøy4 h 40 min
29 Oct 2025Ro FjordEggesbønes1 h 31 min
28 Oct 2025Ro FjordEggesbønes3 h 3 min
27 Oct 2025Ro FjordJuvika B2 h 34 min
15 Aug 2025Ro WestBrattholmen28 h 2 min
14 Aug 2025Ro WestBrattholmen10 h 3 min
12 Aug 2025Ro WestBrattholmen20 h 46 min
11 Aug 2025Ro WestBrattholmen10 h 7 min
10 Aug 2025Ro WestBrattholmen6 h 57 min
12 Jul 2025Ronja MistralBrattholmen13 h 41 min
11 Jul 2025Ronja MistralBrattholmen13 h 38 min
Show 32 older visits
ArrivalVesselPrevious farm (14 days)Duration
22 May 2025Ro WestKyravika18 h 33 min
22 May 2025Ro WestKyravika2 h 32 min
20 May 2025Ro WestKyravika26 h 14 min
08 Apr 2025Ro WestHegnes5 h 33 min
08 Apr 2025Ro WestHegnes11 h 47 min
07 Apr 2025Ro WestHegnes10 h 54 min
22 Nov 2024Ronja EvolutionRøysa4 h 3 min
18 Nov 2024Ronja EvolutionRøysa3 h 58 min
29 Jun 2024Ronja SkilsoyEggesbønes4 h 24 min
28 Jun 2024Ronja SkilsoyEggesbønes3 h 52 min
22 Jun 2024Ro FjordKrabbestig2 h 30 min
21 Jun 2024Ro FjordKrabbestig3 h 54 min
30 May 2024Ro FjordEggesbønes2 h 26 min
28 May 2024Ro FjordHesteneset1 h 10 min
09 May 2024Ro FjordEggesbønes2 h 43 min
07 May 2024Ronja Boroyno other farm4 h 13 min
27 Apr 2024Ro VentureBrattholmen33 h 15 min
26 Feb 2024Ro FjordEggesbønes1 h 13 min
26 Feb 2024Ro WestBrunsvik1 h 32 min
26 Feb 2024Ro FjordEggesbønes2 h 22 min
25 Feb 2024Ro FjordEggesbønes1 h 43 min
25 Feb 2024Ro FjordEggesbønes1 h 26 min
25 Feb 2024Ro WestBrunsvik5 h 8 min
25 Feb 2024Ro FjordEggesbønes6 h 0 min
25 Feb 2024Ro WestBrunsvik3 h 22 min
24 Feb 2024Ro FjordEggesbønes1 h 6 min
24 Feb 2024Ro WestBrunsvik4 h 4 min
24 Feb 2024Ro FjordEggesbønes1 h 34 min
24 Feb 2024Ro WestBrunsvik4 h 19 min
23 Feb 2024Ro FjordEggesbønes7 h 28 min
22 Feb 2024Ronja BoroyEggesbønes3 h 18 min
21 Feb 2024Ro FjordEggesbønes10 h 16 min

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

Licences

Site MAB: 3,900 tonnes
LicenceTypeCapacityHolder
SF G 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tMowi Seawater Norway AS
SF G 0004Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tMowi Seawater Norway AS
SF G 0007Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tMowi Seawater Norway AS
SF H 0004Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tMowi Seawater Norway AS
SF H 0010Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tMowi Seawater Norway AS
SF H 0017Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tMowi Seawater Norway AS
SF H 0020Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tMowi Seawater Norway AS

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