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The Salmon Ledger
NOEN

Langavika

Site 11928 · Stavanger municipality · Production area 2, Ryfylke

Below the lice limit, week 39Operated by Mowi Seawater Norway AS · group Mowi
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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 19 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
18Wellboat visits in 2026by 3 different vessels · latest 07 May 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026
2Escapes reported1 salmon, November 2025Since 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
Show as table
Adult female lice per fish per week, 2026
WeekAdult female lice per fishLice limitStatus
10.060.5Below the limit
20.110.5Below the limit
30.060.5Below the limit
40.130.5Below the limit
50.170.5Below the limit
60.140.5Below the limit
70.160.5Below the limit
80.170.5Below the limit
90.170.5Below the limit
100.260.5Below the limit
110.320.5Below the limit
120.160.5Below the limit
130.280.5Below the limit
140.310.5Below the limit
150.090.5Below the limit
160.140.2Below the limit
170.000.2Below the limit
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
34unknown0.5Not reported
35unknown0.5Not reported
36unknown0.5Not reported
37unknown0.5Not reported
380.000.5Below the limit
390.000.5Below 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
Show as table
Adult female lice per fish per week, 2025
WeekAdult female lice per fishLice limitStatus
10.000.5Below the limit
20.010.5Below the limit
30.020.5Below the limit
40.120.5Below the limit
50.040.5Below the limit
60.180.5Below the limit
70.140.5Below the limit
80.060.5Below the limit
90.130.5Below the limit
100.120.5Below the limit
110.110.5Below the limit
120.290.5Below the limit
130.160.5Below the limit
140.090.5Below the limit
150.110.5Below the limit
160.100.2Below the limit
170.060.2Below the limit
180.100.2Below the limit
190.060.2Below the limit
200.110.2Below the limit
210.180.2Near the limit
220.210.5Below the limit
230.350.5Below the limit
240.040.5Below the limit
250.140.5Below the limit
260.740.5Above the limit
270.030.5Below the limit
280.290.5Below the limit
290.080.5Below the limit
300.110.5Below the limit
310.270.5Below the limit
320.380.5Below the limit
330.470.5Near the limit
340.310.5Below the limit
350.300.5Below the limit
360.170.5Below the limit
370.090.5Below the limit
380.130.5Below the limit
390.140.5Below the limit
400.060.5Below the limit
410.030.5Below the limit
420.000.5Below the limit
430.000.5Below the limit
440.000.5Below the limit
450.000.5Below the limit
460.000.5Below the limit
470.010.5Below the limit
480.060.5Below the limit
490.040.5Below the limit
500.120.5Below the limit
510.090.5Below the limit
520.100.5Below the limit
20240 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
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Adult female lice per fish per week, 2024
WeekAdult female lice per fishLice limitStatus
10.340.5Below the limit
20.410.5Near the limit
30.270.5Below the limit
40.370.5Below the limit
50.380.5Below the limit
60.390.5Below the limit
70.320.5Below the limit
80.440.5Near the limit
90.270.5Below the limit
100.420.5Near the limit
110.210.5Below the limit
120.360.5Below the limit
130.180.5Below the limit
140.180.5Below the limit
150.120.5Below the limit
160.100.2Below the limit
170.130.2Below the limit
18unknown0.2Reported without a count
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
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
470.000.5Below the limit
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
20231 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
401.720.5Above the limit
410.200.5Below the limit
420.180.5Below the limit
430.070.5Below the limit
440.320.5Below the limit
450.050.5Below the limit
460.090.5Below the limit
470.300.5Below the limit
480.480.5Near the limit
490.340.5Below the limit
500.330.5Below the limit
510.280.5Below the limit
520.260.5Below the limit

Treatments

Norwegian Food Safety Authority
  • Week 28, 2025
    Thermal delousing1 pen
  • Week 27, 2025
    Thermal delousing9 pens
  • Week 24, 2025
    Mechanical delousingWhole site
  • Week 14, 2025
    Medicinal bath, Thermal delousing10 pens · Azamethiphos

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
  • 26 Nov 2025
    1 salmon escapedCause: Hull i håv benyttet til å h 1 åve svimer/døende laks ut av kastenot under levering · recaptured 1 · Directorate of Fisheries
  • 11 Oct 2025
    2 salmon escapedCause: Makrelstørje i M6 · recaptured 1 · Directorate of Fisheries

Wellboat visits

18 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 May 2026Ronja MerdoeTendalsvik5 h 18 min
05 May 2026Ronja MerdoeTendalsvik6 h 17 min
04 May 2026TaurangaLangevågen10 h 48 min
03 May 2026Ronja MerdoeTendalsvik6 h 29 min
30 Apr 2026Ronja MerdoeTendalsvik34 min
28 Apr 2026Ronja MerdoeTendalsvik5 h 4 min
12 Apr 2026Ronja MerdoeUtåker1 h 42 min
09 Apr 2026Ronja Merdoeno other farm6 h 6 min
08 Apr 2026TaurangaVassvik2 h 46 min
07 Apr 2026Ronja MerdoeBuksevika5 h 54 min
01 Apr 2026TaurangaPinnen8 h 8 min
31 Mar 2026Ronja MerdoeBuksevika5 h 8 min
Show 43 older visits
ArrivalVesselPrevious farm (14 days)Duration
30 Mar 2026TaurangaPinnen10 h 3 min
29 Mar 2026Ronja MerdoeBuksevika5 h 23 min
28 Mar 2026TaurangaPinnen8 h 26 min
27 Mar 2026Ronja MerdoeBuksevika6 h 11 min
21 Jan 2026TaurangaLindvik9 h 49 min
18 Jan 2026Ronja MaloyUtåker10 h 20 min
22 Dec 2025TaurangaLindvik8 h 39 min
01 Dec 2025TaurangaOksen8 h 59 min
30 Nov 2025Ronja MerdoeOksen3 h 2 min
26 Nov 2025TaurangaOksen10 h 50 min
25 Nov 2025Ronja MerdoeOksen7 h 27 min
04 Sep 2025Ronja MerdoeFosså3 h 45 min
03 Sep 2025TaurangaFosså7 h 40 min
02 Sep 2025Ronja MerdoeFosså4 h 8 min
15 Jul 2025NavoeyHattasteinen4 h 55 min
05 Apr 2025Ronja BoroyLindvik52 min
04 Apr 2025Ronja BoroyLindvik5 h 35 min
04 Apr 2025Ronja BoroyLindvik3 h 22 min
03 Apr 2025Ronja BoroyLindvik1 h 38 min
03 Apr 2025Ronja BoroyLindvik1 h 24 min
03 Apr 2025Ronja BoroyLindvik4 h 31 min
02 Apr 2025Ronja BoroyLindvik3 h 58 min
02 Apr 2025Ronja BoroyLindvik7 h 24 min
01 Apr 2025Ronja BoroyLindvik3 h 40 min
01 Apr 2025Ronja BoroyLindvik4 h 51 min
31 Mar 2025Ronja BoroyLindvik45 min
22 Dec 2024Ronja MaloyVindsvik3 h 53 min
20 Dec 2024Ronja MaloyVindsvik3 h 2 min
12 Dec 2024Ronja MaloyFosså43 min
12 Dec 2024Ronja MaloyFosså3 h 54 min
21 Nov 2024Ronja MistralOanes Sjø3 h 37 min
19 Nov 2024Ronja MistralOanes Sjø3 h 29 min
16 Nov 2024Ronja MistralHestholmen Ø7 h 33 min
12 May 2024Ronja Merdoeno other farm4 h 31 min
07 May 2024Ronja Merdoeno other farm3 h 27 min
05 May 2024Ronja Merdoeno other farm6 h 41 min
24 Apr 2024TaurangaOksen1 h 35 min
23 Apr 2024Ronja Merdoeno other farm4 h 1 min
21 Apr 2024Ronja Merdoeno other farm5 h 39 min
16 Apr 2024Ronja MerdoeUtåker4 h 0 min
14 Apr 2024Ronja MerdoeUtåker5 h 54 min
02 Apr 2024TaurangaKjeahola disease or zone there7 h 54 min
12 Jan 2024NavoeyRossholmen N2 h 15 min

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

Licences

Site MAB: 6,720 tonnes
LicenceTypeCapacityHolder
R F 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout846 tFinnøy Fisk AS
R F 0003Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R F 0005Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R F 0030Kommersiell / matfiskSalmon, Rainbow trout, Trout845 tFinnøy Fisk AS
R HM 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R HM 0002Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R HM 0003Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R HM 0008Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R ST 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R TV 0002Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R TV 0004Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R V 0004Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS
R V 0011Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tMowi Seawater Norway AS

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