Tåke og dårlig sikt på sjøen: hva du gjør

Sist kontrollert: 14. oktober 2026

Steg for steg

1. Fastslå posisjonen nå

   Når du ser tåka komme, noter posisjonen din med en gang i GPS-en og på papirsjøkartet.[13]

2. Senk farten

   Sakte er den eneste sikre farten i tåke. Kjør i en fart som lar deg stoppe eller gire i tide, og ha motoren klar til å manøvrere med en gang.[27][6]

3. Lanterner på, radarreflektor oppe

   Slå på lanternene, også om dagen, og sørg for at radarreflektoren er oppe.[11][23][14]

4. Gi tåkesignal

   Etter COLREGs gir en motorbåt som har fart gjennom vannet ett langt støt (4–6 sekunder) minst annethvert minutt; en seilbåt gir ett langt og to korte støt. En båt under 12 m kan i stedet gi et annet effektivt lydsignal minst annethvert minutt.[1][2][3][10]

5. Se og lytt

   Sett flere fra mannskapet på utkikk og sjekk at alle har redningsvest på. Slå av musikken og lytt hele tiden etter motorer, tåkelurer, stemmer og tåkesignaler.[8][15][18][22]

6. Bruk radar og AIS, men stol ikke på dem

   Bruk radar og AIS hvis du har det. Husk at små båter kanskje ikke vises på andre fartøyers radar, selv med reflektor.[14][19][28]

7. Hører du et signal forut? Senk farten til krypefart

   Hører du et annet fartøys tåkesignal forut for deg, senk farten til det minste som holder deg på kurs, og stopp om nødvendig, til faren er over.[7]

8. Kom deg ut av skipsledene

   Styr med sikker fart og stø kurs mot grunnere vann unna travle skipsleder, ankre så og vent. Må du krysse et trafikkfelt, kryss i rett vinkel på trafikkretningen.[16][9]

9. Gi signal til ankers og lytt på kanal 16

   Til ankers ringer et fartøy raskt med klokke i omtrent 5 sekunder minst én gang i minuttet; en båt under 12 m kan i stedet gi et annet effektivt lydsignal minst annethvert minutt. Fortsett å lytte på VHF kanal 16.[5][3][20]

10. Varsle om hjelp hvis du er i fare

    Tror du at du sitter fast et farlig sted, bruk VHF-radioen til å varsle om hjelp.[17]

Unngå

• Ikke hold vanlig fart. Sakte er den eneste sikre farten i tåke.[27]
• Ikke gå ut fra at skip ser deg på radar eller AIS.[19][28]
• Ikke spill radio eller la deg distrahere av prat; du trenger ørene dine.[22]
• Ikke kryss en skipsled på skrå; må du krysse, gjør det i rett vinkel.[9]
• Ikke gå ut fra at sola brenner bort tåka; havtåke kan bli liggende langt utover ettermiddagen.[21]

Før du drar ut

• Før du drar ut: monter den beste radarreflektoren som er praktisk for båten din.[29]
• Før du drar ut: ha med en fungerende lydsignalinnretning. Båter under 12 m trenger ikke fløyte og klokke, men må ha en annen måte å gi et effektivt lydsignal på.[12]
• Før du drar ut: lær deg lur- og klokkesignalene du må gi i tåke.[26]
• Før du drar ut: ha med kompass og sjøkart, så du kan navigere selv om elektronikken svikter.[25]

Ofte stilte spørsmål

Kilder

Kildene siteres på originalspråket.

1. IMO COLREGs Rule 35(a), text published by US Coast Guard Navigation Center (2026-10-14): “A power-driven vessel making way through the water shall sound at intervals of not more than 2 minutes one prolonged blast”
2. IMO COLREGs Rule 35(c), text published by US Coast Guard Navigation Center (2026-10-14): “shall, instead of the signals prescribed in Rule 35 (a) or (b), sound at intervals of not more than 2 minutes three blasts in succession, namely one prolonged followed by two short blasts”
3. IMO COLREGs Rule 35(j), text published by US Coast Guard Navigation Center (2026-10-14): “A vessel of less than 12 meters in length shall not be obliged to give the above mentioned signals but, if she does not, shall make some other efficient sound signal at intervals of not more than 2 minutes.”
4. IMO COLREGs Rule 35(b), text published by US Coast Guard Navigation Center (2026-10-14): “A power-driven vessel underway but stopped and making no way through the water shall sound at intervals of no more than 2 minutes two prolonged blasts in succession with an interval of about 2 seconds between them.”
5. IMO COLREGs Rule 35(g), text published by US Coast Guard Navigation Center (2026-10-14): “A vessel at anchor shall at intervals of not more than 1 minute ring the bell rapidly for about 5 seconds.”
6. IMO COLREGs Rule 19(b), text published by US Coast Guard Navigation Center (2026-10-14): “Every vessel shall proceed at a safe speed adapted to the prevailing circumstances and conditions of restricted visibility. A power-driven vessel shall have her engines ready for immediate maneuver.”
7. IMO COLREGs Rule 19(e), text published by US Coast Guard Navigation Center (2026-10-14): “every vessel which hears apparently forward of her beam the fog signal of another vessel, or which cannot avoid a close-quarters situation with another vessel forward of her beam, shall reduce her speed to be the minimum at which she can be kept on her course.”
8. IMO COLREGs Rule 5, text published by US Coast Guard Navigation Center (2026-10-14): “Every vessel shall at all times maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision.”
9. IMO COLREGs Rule 10(c), text published by US Coast Guard Navigation Center (2026-10-14): “A vessel, shall so far as practicable, avoid crossing traffic lanes but if obliged to do so shall cross on a heading as nearly as practicable at right angles to the general direction of traffic flow.”
10. IMO COLREGs Rule 32(c), text published by US Coast Guard Navigation Center (2026-10-14): “The term "prolonged blast" means a blast of from four to six seconds duration.”
11. IMO COLREGs Rule 20(c), text published by US Coast Guard Navigation Center (2026-10-14): “The lights prescribed by these Rules shall, if carried, also be exhibited from sunrise to sunset in restricted visibility”
12. IMO COLREGs Rule 33(b), text published by US Coast Guard Navigation Center (2026-10-14): “A vessel of less than 12 meters in length shall not be obliged to carry the sound signaling appliances prescribed in Rule 33 (a) but if she does not, she shall be provided with some other means of making an efficient signal.”
13. RNLI (2026-10-14): “When you see fog approaching, immediately do a position fix on your GPS and on your paper chart.”
14. RNLI (2026-10-14): “Make yourself visible and help yourself see other vessels – switch on navigation lights, make sure your radar reflector’s up, and use your radar and AIS (Automatic Identification System).”
15. RNLI (2026-10-14): “Nominate extra crew for lookout duty and check all are wearing lifejackets.”
16. RNLI (2026-10-14): “At a safe speed and a steady course, head for shallower water where you won’t be in any busy shipping lanes. There, drop anchor and sit it out.”
17. RNLI (2026-10-14): “If you’re really worried you’re stuck in a dangerous place, use your VHF radio to call for help.”
18. RNLI (2026-10-14): “keep listening out for engine noise, horns, voices and other signs of vessels nearby.”
19. RNLI (2026-10-14): “Very small vessels like dinghies don’t always show up on the radar, so you’ve got to be extra careful.”
20. RNLI (2026-10-14): “Listen on VHF Ch 16 and, in restricted waters, Ch 13.”
21. RNLI (2026-10-14): “It’s a common misconception that fog always gets ‘burned off’ by the sun as the day progresses; sea fog can still linger well into the afternoon.”
22. RNLI (2026-10-14): “Don’t be tempted to stick on the radio while you’re waiting for the fog to clear, or get distracted by conversation”
23. US National Weather Service (NOAA) (2026-10-14): “Turn on all of your running lights, even in daytime.”
24. US National Weather Service (NOAA) (2026-10-14): “If you are unable to get your bearings, stay put until the fog lifts but make sure you are in a safe location.”
25. US National Weather Service (NOAA) (2026-10-14): “Have a compass available. Even if you don't know where you are in the fog, with a compass you can determine the direction you are navigating.”
26. US National Weather Service (NOAA) (2026-10-14): “Be familiar with horn and bell sounds you should produce to warn others around you when in dense fog.”
27. Transport Canada – Safe Boating Guide (TP 511E) (2026-10-14): “Slow is the only safe speed in fog, mist, rain, smoke and darkness”
28. Maritime and Coastguard Agency (MGN 349) (2026-10-14): “There is no guarantee that a small vessel will consistently show on radar screens”
29. Maritime and Coastguard Agency (MGN 349) (2026-10-14): “All small craft should consider fitting, where practicable, the most effective and appropriate radar reflector or radar target enhancer (RTE) for their circumstances; and ensure those comply with international standards.”
30. IMO COLREGs Rule 32(b), text published by US Coast Guard Navigation Center (2026-10-14): “The term "short blast" means a blast of about one seconds duration.”

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