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The Salmon Ledger
NOEN

Vassgåsholmen

Site 37717 · Orkland municipality · Production area 6, Nordmøre og Sør-Trøndelag

Below the lice limit, week 39Operated by Lerøy Midt Sjø AS · group Lerøy Seafood Group
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0.19Adult female lice per fishLimit 0.50 · below the limitWeek 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026
1Weeks above the limit in 2026of 39 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026
20Lice treatments in 2026Latest: Mechanical delousing, week 38, 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
16Wellboat visits in 2026by 2 different vessels · latest 30 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.

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
10.170.5Below the limit
20.180.5Below the limit
30.180.5Below the limit
40.110.5Below the limit
50.180.5Below the limit
60.220.5Below the limit
70.110.5Below the limit
80.120.5Below the limit
90.170.5Below the limit
100.170.5Below the limit
110.180.5Below the limit
120.230.5Below the limit
130.100.5Below the limit
140.170.5Below the limit
150.220.5Below the limit
160.080.2Below the limit
170.040.2Below the limit
180.110.2Below the limit
190.080.2Below the limit
200.130.2Below the limit
210.070.2Below the limit
220.030.5Below the limit
230.110.5Below the limit
240.070.5Below the limit
250.140.5Below the limit
260.180.5Below the limit
270.110.5Below the limit
280.140.5Below the limit
290.250.5Below the limit
300.950.5Above the limit
310.230.5Below the limit
320.120.5Below the limit
330.070.5Below the limit
340.110.5Below the limit
350.250.5Below the limit
360.120.5Below the limit
370.220.5Below the limit
380.260.5Below the limit
390.190.5Below the limit

Earlier years

20251 of 25 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
10.330.5Below the limit
20.150.5Below the limit
30.140.5Below the limit
40.120.5Below the limit
50.130.5Below the limit
60.140.5Below the limit
70.150.5Below the limit
8unknown0.5Not reported
9unknown0.5Not reported
10unknown0.5Not reported
11unknown0.5Not reported
12unknown0.5Not reported
13unknown0.5Not reported
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
34unknown0.5Not reported
350.000.5Below the limit
360.000.5Below the limit
370.000.5Below the limit
380.000.5Below the limit
390.000.5Below the limit
400.020.5Below the limit
410.380.5Below the limit
420.450.5Near the limit
431.120.5Above the limit
440.360.5Below the limit
450.040.5Below the limit
460.040.5Below the limit
470.010.5Below the limit
480.050.5Below the limit
490.020.5Below the limit
500.060.5Below the limit
510.080.5Below the limit
520.090.5Below the limit
20244 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
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Adult female lice per fish per week, 2024
WeekAdult female lice per fishLice limitStatus
10.000.5Below the limit
20.000.5Below the limit
30.000.5Below the limit
40.000.5Below the limit
50.000.5Below the limit
60.000.5Below the limit
70.000.5Below the limit
80.000.5Below the limit
90.000.5Below the limit
100.000.5Below the limit
110.000.5Below the limit
120.000.5Below the limit
130.030.5Below the limit
140.000.5Below the limit
150.010.5Below the limit
160.010.2Below the limit
170.040.2Below the limit
180.050.2Below the limit
190.040.2Below the limit
200.060.2Below the limit
210.090.2Below the limit
220.050.5Below the limit
230.100.5Below the limit
240.110.5Below the limit
250.200.5Below the limit
260.170.5Below the limit
270.210.5Below the limit
281.250.5Above the limit
290.370.5Below the limit
300.330.5Below the limit
310.510.5Above the limit
320.190.5Below the limit
330.290.5Below the limit
340.290.5Below the limit
350.400.5Near the limit
360.640.5Above the limit
370.660.5Above the limit
380.060.5Below the limit
390.060.5Below the limit
400.110.5Below the limit
410.120.5Below the limit
420.160.5Below the limit
430.140.5Below the limit
440.220.5Below the limit
450.310.5Below the limit
460.260.5Below the limit
470.290.5Below the limit
480.220.5Below the limit
490.300.5Below the limit
500.230.5Below the limit
510.170.5Below the limit
520.230.5Below the limit
20230 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
WeekAdult female lice per fishLice limitStatus
40unknown0.5Not reported
41unknown0.5Not reported
42unknown0.5Not reported
43unknown0.5Not reported
44unknown0.5Not reported
45unknown0.5Not reported
46unknown0.5Not reported
47unknown0.5Not reported
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

Treatments

Norwegian Food Safety Authority
  • Week 38, 2026
    Mechanical delousing2 pens
  • Week 35, 2026
    Mechanical delousing5 pens
  • Week 31, 2026
    Mechanical delousing, Freshwater treatment12 pens
  • Week 28, 2026
    Mechanical delousing1 pen
Show all 23
  • Week 27, 2026
    Mechanical delousing5 pens
  • Week 25, 2026
    Mechanical delousing2 pens
  • Week 24, 2026
    Mechanical delousing3 pens
  • Week 22, 2026
    Mechanical delousing1 pen
  • Week 21, 2026
    Mechanical delousing2 pens
  • Week 16, 2026
    Freshwater treatment, Mechanical delousing6 pens
  • Week 13, 2026
    Thermal delousing, Mechanical delousing6 pens
  • Week 45, 2025
    Medicinal bath2 pens · Azamethiphos
  • Week 44, 2025
    Medicinal bath3 pens · Azamethiphos
  • Week 43, 2025
    Freshwater treatment7 pens
  • Week 38, 2024
    Mechanical delousing, Freshwater treatmentWhole site
  • Week 37, 2024
    Mechanical delousing3 pens
  • Week 36, 2024
    Mechanical delousing4 pens
  • Week 35, 2024
    Mechanical delousing3 pens
  • Week 34, 2024
    Mechanical delousing3 pens
  • Week 33, 2024
    Mechanical delousing1 pen
  • Week 32, 2024
    Mechanical delousing, Freshwater treatment2 pens
  • Week 31, 2024
    Freshwater treatment, Mechanical delousing12 pens
  • Week 29, 2024
    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

16 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
30 Aug 2026KristiansundHausan7 h 27 min
25 Aug 2026KristiansundHausan2 h 32 min
04 Aug 2026KristiansundGunnarøya1 h 23 min
02 Aug 2026Froy HovdingNord Leksa5 h 13 min
01 Aug 2026Froy HovdingNord Leksa5 h 50 min
01 Aug 2026Froy HovdingNord Leksa1 h 13 min
31 Jul 2026Froy HovdingNord Leksa15 h 45 min
30 Jul 2026Froy HovdingNord Leksa22 h 15 min
29 Jul 2026Froy HovdingNord Leksa16 h 16 min
28 Jul 2026Froy HovdingNord Leksa14 h 28 min
27 Jul 2026Froy HovdingNord Leksa17 h 20 min
26 Jul 2026Froy HovdingNord Leksa3 h 37 min
Show 49 older visits
ArrivalVesselPrevious farm (14 days)Duration
13 Jun 2026KristiansundEdøya13 h 55 min
20 Apr 2026Froy HovdingRingholmen2 h 49 min
19 Apr 2026Froy HovdingRingholmen9 h 14 min
18 Apr 2026Froy HovdingRingholmen15 h 26 min
03 Nov 2025Froy HovdingUlværholmen5 h 20 min
03 Nov 2025Froy HovdingUlværholmen2 h 8 min
25 Oct 2025Froey VikingReitholmen23 h 3 min
24 Oct 2025Froey VikingReitholmen19 h 54 min
23 Oct 2025Froey VikingReitholmen16 h 17 min
22 Oct 2025Froey VikingReitholmen19 h 15 min
14 Oct 2025Smola VagOslandsurda4 h 25 min
02 Sep 2025Ronja AuroraRingholmen3 h 25 min
01 Sep 2025Ronja AuroraRingholmen3 h 36 min
30 Aug 2025Ronja AuroraRingholmen1 h 44 min
20 Feb 2025Froey VikingRingholmen5 h 17 min
19 Feb 2025Froey VikingRingholmen3 h 43 min
18 Feb 2025Froey VikingRingholmen3 h 23 min
12 Feb 2025KristiansundHagahammaren2 h 26 min
11 Feb 2025KristiansundHagahammaren1 h 57 min
06 Feb 2025KristiansundRenndalen2 h 29 min
15 Dec 2024KristiansundUlvan2 h 51 min
14 Dec 2024KristiansundNord Leksa2 h 34 min
10 Dec 2024Froy HovdingHofsøya2 h 29 min
07 Nov 2024KristiansundOmsøyholman3 h 44 min
07 Nov 2024KristiansundOmsøyholman1 h 38 min
13 Oct 2024KristiansundNord Leksa1 h 56 min
01 Oct 2024KristiansundHendneset2 h 34 min
01 Oct 2024KristiansundHendneset2 h 10 min
22 Sep 2024Froy HovdingHofsøya18 h 13 min
21 Sep 2024Froy HovdingHofsøya12 h 50 min
20 Sep 2024Froy HovdingHofsøya13 h 13 min
19 Sep 2024Froy HovdingHofsøya16 h 35 min
18 Sep 2024Froy HovdingHofsøya13 h 30 min
10 Sep 2024Froy HovdingRingholmen12 h 26 min
07 Sep 2024Froy HovdingRingholmen57 h 26 min
07 Aug 2024KristiansundGunnarøya1 h 19 min
06 Aug 2024KristiansundGunnarøya4 h 45 min
06 Aug 2024KristiansundGunnarøya7 h 54 min
05 Aug 2024KristiansundGunnarøya11 h 41 min
04 Aug 2024KristiansundGunnarøya11 h 46 min
04 Aug 2024KristiansundGunnarøya2 h 33 min
03 Aug 2024KristiansundGunnarøya1 h 54 min
01 Aug 2024Froy HovdingOmsøyholman14 h 34 min
31 Jul 2024Froy HovdingOmsøyholman13 h 3 min
20 Jul 2024KristiansundNordskag20 h 42 min
19 Jul 2024KristiansundNordskag10 h 18 min
13 Mar 2024NeptunKorsneset1 h 50 min
12 Mar 2024NeptunKorsneset2 h 17 min
27 Feb 2024Neptunno other farm2 h 14 min

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

Licences

Site MAB: 3,120 tonnes
LicenceTypeCapacityHolder
ST F 0003Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tLerøy Midt Sjø AS
ST F 0022Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tLerøy Midt Sjø AS
ST F 0023Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tLerøy Midt Sjø AS
ST F 0030Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tLerøy Midt Sjø AS
ST H 0019Kommersiell / matfiskSalmon, Rainbow trout, Trout822 tLerøy Midt Sjø AS
ST H 0022Kommersiell / matfiskSalmon, Rainbow trout, Trout820 tLerøy Midt Sjø AS
ST HE 0011Kommersiell / matfiskSalmon, Rainbow trout, Trout805 tLerøy Midt Sjø AS
ST SI 0001Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tLerøy Midt Sjø AS
ST SI 0013Kommersiell / matfiskSalmon, Rainbow trout, Trout788 tLerøy Midt Sjø AS

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