{ "type":"Feature", "properties":{ "id":"122a0d3e-a6cb-4e9c-ac4a-4d97b89f11f3", "date_updated":"2025-07-09T09:04:41.690000", "title_en":"Vall\u00f8-Langesundbukta", "title_no":"Vall\u00f8-Langesundbukta", "description_en":"
\n
\n
\n
\n

General Description

\n

No continuous inshore fairway exists along this coastline, even though the waters are filled with islands, islets, and skerries up to 5 nautical miles from the coast. 

\n

The following landmarks can be mentioned:

\n
    \n
  • Slottsfjelltårnet, 64 m, near Tønsberg, is a good mark that is particularly well seen in Huikjæla. The landmark is hidden by the forest on Føynland and the forested hill behind Fagersand, but can be seen again a bit free east of Bolærne.
    • \n
  • Fulehuk (decommissioned lighthouse), white wooden house with a 15 m high tower.
    • \n
  • Hollenderbåen light (replaces Fulehuk lighthouse). Light on a concrete column, the light's height is 18.6 meters above sea level. Veten, 99 m, the highest point on Nøtterøy.
    • \n
  • Søndre Mostein, E side of Tjøme, a 46 m high, bare islet; directly west lies the forested Burø.
    • \n
  • Ildverket, E side of Tjøme, recognizable by a ledge on the southern end.
    • \n
  • Store Færder, dark gray islet, 58 m high. The islets on the southern side are considerably lower and lighter. Harbor opportunities for small boats on the north and east sides of the island.
    • \n
  • Færder fyr (lighthouse), 43 m high, red iron tower with a white belt.
    • \n
  • Tjømebåen, approximately 2 nautical miles south of Tjøme, is a low, black skerry. Seen from the south at a distance of about 2 nautical miles, it blends in with the background.
    • \n
  • Rauer is a group of low, bare, light gray islets east of Svenner.
    • \n
  • The cairn on Bonden directly east of Rauer, 2.5 m high, black truncated cone, on a small, 1.5 m high skerry.
    • \n
  • Svenner lighthouse, 18.7 m high, red tower.
    • \n
  • Tvistein with Tvistein lighthouse, black, low islet. The lighthouse is a white stone house with an 11.3 m high concrete tower.
    • \n
\n

Traffic Separation

\n

During navigation in the Oslofjorden between Færder fyr (light) and Filtvet fyr (light), all vessels are recommended to follow the traffic separation system shown on the nautical charts. Rules for navigation in the traffic separation system are described in the Marine Traffic Regulations, FOR-2015-09-23-1094 concerning permission to use the waters and capacity limitations. Chapter 1. See lovdata.no.

\n

Provisions applicable to the use of waters in the counties of Østfold, Akershus, Oslo, Buskerud, and Vestfold and covered by the traffic centers in Horten and in Oslo harbor are described in the Regulations on the use of the traffic centers’ service area and specific waters (Marine Traffic Regulations), FOR-2015-09-23-1094, Chapter 3. See lovdata.no.

\n

Current and Tide

\n

The current on the stretch from Tønsberg tønne to Langesundsfjorden is mostly westward. Wind conditions further out in the Skagerrak influence the current, which tends to change with the wind under normal conditions.

\n

At times, there can be different currents outside the archipelago and inside (Svennerrenna), where it can become very strong westward, up to 3-4 knots.

\n

The mean difference between spring high water and low water is about 28 cm, and about 16 cm between neap high water and low water. High water and low water occur approximately at the same time as at Helgeroa. The water level is strongly influenced by meteorological conditions.

\n

For general descriptions, see https://www.kartverket.no/sehavniva/.

\n

Radio Beacons/RACON

\n

Færder lighthouse is a radio beacon.

\n

Færder lighthouse (T), Hollenderbåen light (O), Svenner lighthouse (N) and Tvistein lighthouse (M) all have RACON.

\n
\n
\n
\n
\n
\n
\n
 
\n
\n
", "description_no":"

Alminnelig omtale

\n

Noen sammenhengende innenskjærs lei finnes ikke på denne kyststrekningen, selv om farvannet er oppfylt av øyer, holmer og skjær som ligger opptil 5 nautiske mil av kysten. 

\n

Av orienteringsmerker kan nevnes følgende:

\n\n

Trafikkseparasjon

\n

Under seilas i Oslofjordenmellom Færder fyr og Filtvet fyr anbefales alle fartøyer å følge det i sjøkartene viste trafikkseparasjonssystem. Regler for seilas i trafikksparasjonssystem er beskrevet i Sjøtrafikkforskriften, FOR-2015-09-23-1094 vedrørende tillatelse til å benytte farvannet og kapasitetsbegrensninger. Kapittel 1.

\n

Bestemmelser som gjelder for bruk av farvann i fylkene Østfold, Akershus, Oslo, Buskerud og Vestfold og som dekkes av trafikksentralene i Horten og i Oslo havn er beskrevet i Forskrift om bruk av sjøtrafikksentralenes tjenesteområde og bruk av bestemte farvann (Sjøtrafikkforskriften), FOR-2015-09-23-1094, kapittel 3.

\n

Strøm og tidevann

\n

Strømmen på strekningen Tønsberg tønne til Langesundsfjorden er mest W gående. Vindforholdene lengre ute i Skagerrak influerer på strømmen, som er tilbøyelig til å skifte med vinden under normale forhold.

\n

Det kan enkelte ganger være forskjellig strøm utenfor skjærgården og innenfor (Svennerrenna Svennerrenna), hvor den kan bli meget sterk W gående, opp til 3-4 knop.

\n

Midlere forskjell mellom spring HW og LW er ca 28 cm, og ca 16 cm mellom nipp HW og LW. HW og LW inntreffer omtrent samtidig med Helgeroa (se “Tidevannstabellen”). Vannstanden er sterkt påvirket av meteorologiske forhold.

\n

For generell omtale, se https://www.kartverket.no/sehavniva/.

\n

Radiofyr/RACON

\n

Færder fyr er radiofyr.

\n

Færder fyr (T), Hollenderbåen lykt (O), Svenner fyr (N) og Tvisteinfyr har alle Racon.

", "caution_en":"", "caution_no":"" }, "id":"122a0d3e-a6cb-4e9c-ac4a-4d97b89f11f3", "geometry":{ "type":"Point", "coordinates":[ 10.3944, 58.9599 ] }, "prev":"121a34a2-8655-4c3a-ba6f-78819bdafcd6", "next":"125ae4dd-e644-4862-84e1-46e7043fa538", "links":[ { "type":"application/json", "rel":"root", "title":"The landing page of this server as JSON", "href":"https://dnl.kartverket.no/api/ogc/v1?f=json" }, { "type":"text/html", "rel":"root", "title":"The landing page of this server as HTML", "href":"https://dnl.kartverket.no/api/ogc/v1?f=html" }, { "rel":"self", "type":"application/geo+json", "title":"This document as JSON", "href":"https://dnl.kartverket.no/api/ogc/v1/collections/dennorskelos/sailingdirections/items/122a0d3e-a6cb-4e9c-ac4a-4d97b89f11f3?f=json" }, { "rel":"alternate", "type":"application/ld+json", "title":"This document as RDF (JSON-LD)", "href":"https://dnl.kartverket.no/api/ogc/v1/collections/dennorskelos/sailingdirections/items/122a0d3e-a6cb-4e9c-ac4a-4d97b89f11f3?f=jsonld" }, { "rel":"alternate", "type":"text/html", "title":"This document as HTML", "href":"https://dnl.kartverket.no/api/ogc/v1/collections/dennorskelos/sailingdirections/items/122a0d3e-a6cb-4e9c-ac4a-4d97b89f11f3?f=html" }, { "rel":"collection", "type":"application/json", "title":"Sailing directions", "href":"https://dnl.kartverket.no/api/ogc/v1/collections/dennorskelos/sailingdirections" }, { "rel":"prev", "type":"application/json", "href":"https://dnl.kartverket.no/api/ogc/v1/collections/dennorskelos/sailingdirections/items/121a34a2-8655-4c3a-ba6f-78819bdafcd6?f=json" }, { "rel":"next", "type":"application/json", "href":"https://dnl.kartverket.no/api/ogc/v1/collections/dennorskelos/sailingdirections/items/125ae4dd-e644-4862-84e1-46e7043fa538?f=json" } ] }