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The Salmon Ledger
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Sørevik

Site 23375 · Høyanger municipality · Production area 4, Nordhordland til Stadt

Below the lice limit, week 39Operated by Osland Seafood AS · group Osland

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

Follow this farmDownload CSV
0.36Adult 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 count · broodstock: limit may differCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026
9Lice treatments in 2026Latest: Thermal delousing, week 29, 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
1Wellboat visits in 2026by 1 vessel · latest 07 Jan 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026
1Escapes reported11 rainbow trout, August 2022Since 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
WeekAdult female lice per fishLice limitStatus
10.000.5Below the limit
20.150.5Below the limit
30.150.5Below the limit
40.390.5Below the limit
50.470.5Near the limit
60.160.5Below the limit
70.000.5Below the limit
80.060.5Below the limit
90.070.5Below the limit
100.010.5Below the limit
110.040.5Below the limit
120.080.5Below the limit
130.230.5Below the limit
140.230.5Below the limit
150.040.5Below the limit
160.060.2Below the limit
170.040.2Below the limit
180.050.2Below the limit
190.090.2Below the limit
200.150.2Below the limit
210.100.2Below the limit
220.240.5Below the limit
230.460.5Near the limit
240.000.5Below the limit
250.080.5Below the limit
260.140.5Below the limit
270.340.5Below the limit
280.460.5Near the limit
290.010.5Below the limit
300.020.5Below the limit
310.080.5Below the limit
320.140.5Below the limit
330.100.5Below the limit
340.190.5Below the limit
350.210.5Below the limit
360.120.5Below the limit
370.230.5Below the limit
380.170.5Below the limit
390.360.5Below the limit

Earlier years

20250 of 32 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 2026Broodstock site: the limit may differ from the general one.
Show as table
Adult female lice per fish per week, 2025
WeekAdult female lice per fishLice limitStatus
10.100.5Below the limit
20.130.5Below the limit
30.100.5Below the limit
40.400.5Near the limit
50.080.5Below the limit
60.170.5Below the limit
70.300.5Below the limit
80.070.5Below the limit
90.180.5Below the limit
100.200.5Below the limit
110.200.5Below the limit
120.230.5Below the limit
130.400.5Near the limit
14unknown0.5Not reported
15unknown0.5Not reported
16unknown0.2Not reported
17unknown0.2Not reported
18unknown0.2Not reported
19unknown0.2Not reported
20unknown0.2Not reported
21unknown0.2Not reported
22unknown0.5Not reported
23unknown0.5Not reported
24unknown0.5Not reported
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
340.000.5Below the limit
350.000.5Below the limit
360.030.5Below the limit
370.000.5Below the limit
380.030.5Below the limit
390.200.5Below the limit
400.450.5Near the limit
410.030.5Below the limit
420.000.5Below the limit
430.220.5Below the limit
440.420.5Near the limit
450.230.5Below the limit
460.380.5Below the limit
470.050.5Below the limit
480.170.5Below the limit
490.280.5Below the limit
500.300.5Below the limit
510.300.5Below the limit
520.350.5Below the limit
20240 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 2026Broodstock site: the limit may differ from the general one.
Show as table
Adult female lice per fish per week, 2024
WeekAdult female lice per fishLice limitStatus
10.390.5Below the limit
20.000.5Below the limit
30.030.5Below the limit
40.050.5Below the limit
50.050.5Below the limit
60.060.5Below the limit
70.010.5Below the limit
80.060.5Below the limit
90.020.5Below the limit
100.080.5Below the limit
110.040.5Below the limit
120.010.5Below the limit
130.010.5Below the limit
140.020.5Below the limit
150.030.5Below the limit
160.040.2Below the limit
170.060.2Below the limit
180.050.2Below the limit
190.040.2Below the limit
200.070.2Below the limit
210.060.2Below the limit
220.170.5Below the limit
230.190.5Below the limit
240.240.5Below the limit
250.330.5Below the limit
260.360.5Below the limit
270.110.5Below the limit
280.110.5Below the limit
290.170.5Below the limit
300.200.5Below the limit
310.200.5Below the limit
320.390.5Below the limit
330.430.5Near the limit
340.310.5Below the limit
350.340.5Below the limit
360.210.5Below the limit
370.180.5Below the limit
380.420.5Near the limit
390.340.5Below the limit
400.360.5Below the limit
410.160.5Below the limit
420.210.5Below the limit
430.390.5Below the limit
440.360.5Below the limit
450.410.5Near the limit
460.140.5Below the limit
470.350.5Below the limit
480.030.5Below the limit
490.250.5Below the limit
500.000.5Below the limit
510.280.5Below the limit
520.080.5Below the limit
20230 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 2026Broodstock site: the limit may differ from the general one.
Show as table
Adult female lice per fish per week, 2023
WeekAdult female lice per fishLice limitStatus
400.150.5Below the limit
410.030.5Below the limit
420.070.5Below the limit
430.130.5Below the limit
440.130.5Below the limit
450.120.5Below the limit
460.080.5Below the limit
470.110.5Below the limit
480.110.5Below the limit
490.060.5Below the limit
500.100.5Below the limit
510.150.5Below the limit
520.250.5Below the limit

Treatments

Norwegian Food Safety Authority
  • Week 29, 2026
    Thermal delousing3 pens
  • Week 28, 2026
    Thermal delousing1 pen
  • Week 24, 2026
    Thermal delousingWhole site
  • Week 15, 2026
    Thermal delousing3 pens
Show all 38
  • Week 7, 2026
    Thermal delousing1 pen
  • Week 6, 2026
    Thermal delousing1 pen
  • Week 5, 2026
    Medicinal feed2 pens · Emamectin benzoat
  • Week 4, 2026
    Medicinal feed2 pens · Emamectin benzoat
  • Week 1, 2026
    Thermal delousingWhole site
  • Week 47, 2025
    Thermal delousingWhole site
  • Week 42, 2025
    Thermal delousingWhole site
  • Week 40, 2025
    Medicinal feedWhole site · Emamectin benzoat
  • Week 39, 2025
    Medicinal feedWhole site · Emamectin benzoat
  • Week 8, 2025
    Thermal delousing1 pen
  • Week 4, 2025
    Thermal delousing2 pens
  • Week 3, 2025
    Thermal delousing1 pen
  • Week 49, 2024
    Thermal delousing3 pens
  • Week 48, 2024
    Thermal delousing2 pens
  • Week 47, 2024
    Thermal delousing2 pens
  • Week 46, 2024
    Thermal delousing3 pens
  • Week 44, 2024
    Thermal delousing2 pens
  • Week 43, 2024
    Thermal delousing1 pen
  • Week 41, 2024
    Thermal delousing4 pens
  • Week 40, 2024
    Thermal delousing1 pen
  • Week 39, 2024
    Thermal delousing2 pens
  • Week 37, 2024
    Thermal delousing2 pens
  • Week 36, 2024
    Thermal delousing3 pens
  • Week 35, 2024
    Thermal delousing1 pen
  • Week 34, 2024
    Thermal delousing2 pens
  • Week 32, 2024
    Thermal delousing3 pens
  • Week 27, 2024
    Thermal delousing3 pens
  • Week 26, 2024
    Thermal delousing1 pen
  • Week 12, 2024
    Medicinal bath5 pens · Azamethiphos
  • Week 2, 2024
    Thermal delousing4 pens
  • Week 51, 2023
    Thermal delousing1 pen
  • Week 45, 2023
    Medicinal feed, Thermal delousing5 pens · Emamectin benzoat
  • Week 44, 2023
    Medicinal feed3 pens · Emamectin benzoat
  • Week 43, 2023
    Medicinal feed1 pen · Emamectin benzoat

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
  • 20 Aug 2022
    11 rainbow trout escapedCause: Makrellestørje komme inn i not. · recaptured 1 · Directorate of Fisheries

Wellboat visits

1 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.

ArrivalVesselPrevious farm (14 days)Duration
07 Jan 2026LangsundKastevika47 min
22 Nov 2025Ro ServerKalvøya N9 h 11 min
02 Sep 2025Ro MasterMarøytåa1 h 14 min
11 Aug 2025LangsundTorvund1 h 7 min
12 Apr 2025Ro FjordHaneholmen59 min
11 Apr 2025Smola VagOslandsurda9 h 45 min
09 Apr 2025RosteinVeiesund disease or zone there1 h 27 min
06 Apr 2025Ro VentureSteinvik disease or zone there38 min
23 Mar 2025Ro Masterno other farm6 h 24 min
09 Mar 2025RosteinKastevika1 h 8 min
09 Mar 2025RosteinKastevika2 h 3 min
02 Mar 2025RobasInstefjord42 min
Show 37 older visits
ArrivalVesselPrevious farm (14 days)Duration
25 Jan 2025Ro ServerMåren14 h 37 min
12 Jan 2025RosteinHesteneset1 h 28 min
04 Jan 2025RobrisHesteneset8 h 30 min
04 Jan 2025RohavHesteneset1 h 35 min
03 Jan 2025RobrisHesteneset9 h 9 min
07 Dec 2024Ro ServerMåren9 h 36 min
07 Dec 2024RosteinInstefjord1 h 34 min
01 Dec 2024RohavInstefjord1 h 39 min
01 Dec 2024RohavHesteneset1 h 45 min
26 Nov 2024RohavAlmbakkevika disease or zone there1 h 5 min
15 Nov 2024LangsundInstefjord1 h 23 min
15 Nov 2024LangsundInstefjord1 h 54 min
15 Nov 2024LangsundJuvika1 h 17 min
12 Nov 2024Ro ServerMåren5 h 3 min
11 Nov 2024Ro ServerMåren6 h 4 min
03 Nov 2024RosteinNesevågen2 h 10 min
22 Oct 2024RosteinInstefjord1 h 15 min
20 Oct 2024RosteinInstefjord2 h 9 min
13 Oct 2024RosteinPorsvika1 h 13 min
07 Oct 2024Ro ServerFureholmen S11 h 49 min
07 Oct 2024Ro ServerFureholmen S51 min
30 Sep 2024LangsundInstefjord3 h 28 min
30 Sep 2024LangsundOltesvik1 h 1 min
15 Sep 2024LangsundLeirvika1 h 38 min
09 Sep 2024Ro VentureKjeringå11 h 16 min
09 Sep 2024RosteinInstefjord54 min
02 Jul 2024Ro VentureJuvika19 h 10 min
01 Jul 2024Ro VentureJuvika12 h 51 min
28 Jun 2024Ro ArcticTorvund2 h 21 min
19 Mar 2024Ro VentureGrytøyraholmen disease or zone there3 h 1 min
19 Mar 2024Ro VentureGrytøyraholmen disease or zone there3 h 41 min
19 Mar 2024Ro VentureGrytøyraholmen disease or zone there1 h 16 min
18 Mar 2024Ro VentureGrytøyraholmen disease or zone there4 h 6 min
18 Mar 2024Ro VentureGrytøyraholmen disease or zone there7 h 6 min
07 Feb 2024Ro ChiefNesevågen6 h 28 min
06 Feb 2024Ro ChiefNesevågen1 h 15 min
08 Jan 2024Ro ServerJuvika37 h 12 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.

CompanyFromTo
Osland Seafood ASWeek 40, 2023Week 39, 2026
Osland Genetics ASWeek 6, 2024Week 46, 2025
Landøy Fiskeoppdrett ASWeek 26, 2024Week 13, 2025

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

Licences

Site MAB: 3,120 tonnes
LicenceTypeCapacityHolder
H AV 0093Kommersiell / matfiskSalmon, Rainbow trout, Trout710 tTroland Lakseoppdrett AS
R V 0023Kommersiell / stamfiskRainbow trout780 tOsland Genetics AS
R V 0027Kommersiell / stamfiskRainbow trout780 tOsland Genetics AS
SF A 0010Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tSteinvik Fiskefarm AS
SF A 0011Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tSteinvik Fiskefarm AS
SF HØ 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout1,350 tOsland Seafood AS
SF HØ 0009Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tOsland Seafood AS
SF HØ 0018Kommersiell / matfiskSalmon, Rainbow trout, Trout648 tOsland Seafood AS
SF HØ 0020Kommersiell / stamfiskRainbow trout780 tOsland Genetics AS
SF HØ 0024Kommersiell / stamfiskRainbow trout780 tOsland Genetics AS

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