UB-81, UK
About UB-81
A wreck dive. It suits Advanced divers and up, as a dive guide states it. The coast faces S: swell from the S reaches it, and wind from the N blows out to sea. No dive centre within 10 km, the nearest 35 km away. The sea is about 9°C in February, its coldest month (drysuit), and 18°C in August, its warmest (7 mm wetsuit and hood). For experienced divers the best months are usually January, February, March and April, with about 7 good days in 7. From the weather of past years. The town to stay in is Ventnor.
- What it is Wreck.
- How deep No source states how deep it goes.
- Who it suits Suits Advanced divers and up, as a dive guide states it.
- Dive centres No dive centre within 10 km, the nearest 35 km away.
Facts: verified.
Dive centres nearby
No dive centre mapped within 25 km.
Dive centres: © OpenStreetMap contributors (ODbL). Credits
Water about 16°C: 7 mm wetsuit and hood. Typical sea temperature for the time of year, not a forecast.
Visibility under 5 m. Typical for the time of year, estimated from ten years of NASA satellite water clarity, not a forecast. Clearest in Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct and Nov (about 5 m).
This week's visibility, the current and the life no free forecast gives. Ask a dive centre before you book.
Saved: this link opens the same trip
The link holds the trip itself: nothing about you is kept. Check the forecast again before you book.
Book the trip
From Chicago: about 14 h 40 door to door, one way. An estimate; the journey never changes the score.
Fly. Chicago O'Hare International Airport (ORD) to LHR, direct.
See flights ORD → LHR · Skyscanner from about £395 returnAdGetting there. 2 h 20 from the airport to UB-81.
Accommodation.
Stay in VentnorAd
Typical prices for a double room that month, not a quote.
Room photos are examples, not these hotels (credits).
See all places to stay in Ventnor (ad) on Booking.com →Closest towns to stay in
Ventnor 35 min by car · rooms from £95 a night · 65 places to stay
Places to stay in Ventnor · Booking.com Ad
Typical prices for a double room that month, not a quote. Distances are straight lines unless a drive is given: a site out at sea is reached by boat.
Hire and lessons.
Dives and courses in Ventnor · GetYourGuideAdDive gear hire in Ventnor · GetYourGuideAd
Budget 
Mid-range 
Luxury Where it is
UB-81 on Google Maps · Directions
The map needs JavaScript. Every place on it is listed on this page, and each place's page links to Google Maps.
One finger scrolls the page; two fingers move the map. Pins are our own positions. Map OpenFreeMap, © OpenMapTiles, data © OpenStreetMap contributors.
Forecast
Best on Mon 19: Sea 0.4 m. Wind 14 kn gusting 21.
The score for experienced divers, coloured as on the area pages:GoodFairPoor
| Day | Score | Sea | Wind | Gusts |
|---|---|---|---|---|
| Sun 18Oct | 74, good | 0.7 m | 17 kn | 30kn |
| Mon 19Oct | 80, good | 0.4 m | 14 kn | 21kn |
| Tue 20Oct | 78, good | 0.5 m | 8 kn | 14kn |
| Wed 21Oct | 0, poor | 0.8 m | 26 kn | 35knboats in |
| Thu 22Oct | 76, good | 1.1 m | 17 kn | 32kn |
| Fri 23Oct | 0, poor | 2.2 m | 42 kn | 68knboats in |
| Sat 24Oct | 76, good | 0.9 m | 16 kn | 33kn |
| Sun 25Oct | 31, poor | 1.6 m | 23 kn | 33knboats in |
| Mon 26Oct | 0, poor | 1.3 m | 28 kn | 40knboats in |
| Tue 27Oct | 0, poor | 2.2 m | 25 kn | 37knboats in |
Day scores are the conditions out of 80, from the two best daylight readings: a morning and an afternoon dive. Sea is the open water's waves near the site, in metres, halved for a sheltered site. Wind and gusts are in knots (10 kn is about 19 km/h); "boats in" marks gusts that keep dive boats in. This week's visibility, the current and the life no free forecast gives.
The season
Good diving days in a typical week, each month, for experienced divers, from 2016 on (ERA5 history scored the same way).
- Jan7of 7
- Feb7of 7
- Mar7of 7
- Apr7of 7
- May7of 7
- Jun7of 7
- Jul7of 7
- Aug7of 7
- Sep7of 7
- Oct7of 7
- Nov7of 7
- Dec7of 7
Typical, not a forecast: the sea and the mean wind of each day, with no gusts or rain in the history.
Rough cost
About £1,025–£1,925 each for 6 nights, 2 people sharing. A guide from typical prices, not a quote. Dives are not priced yet: we have no sourced price for a guided dive, so they are not in it.
- Flights £395–£820
- To the UK airport £35–£65
- Hire car £105–£175
- Stay £250–£420
- Food £240–£445
Places to eat near Ventnor
- Red ChilliIndian · 0.1 km from the centre
- The MandarinAsian · 0.1 km from the centreFood hygiene 3 of 5, Mar 2026
- The Ventnor Fish BarFish and chips · 0.1 km from the centre
- Amarcord Pizzeria e RistorantePizza · 0.2 km from the centreFood hygiene 5 of 5, Jul 2025
- Le Tour du Monde RestaurantBritish · 0.2 km from the centre
- Masala Bay VentnorIndian · 0.2 km from the centre
Within 2 km of the town centre, listed by how complete the listing is (website, opening hours, cuisine) and whether two sources name it. Not a judgement of the food: we have no reviews. Listings © OpenStreetMap contributors (ODbL) and Overture Maps Foundation; food hygiene ratings from the Food Standards Agency (Open Government Licence). Credits
Book the trip
Where to stayAd
Places to stay · Booking.com (ad)Links marked Ad may pay us a small commission if you book. You pay the same price, and it never changes a score.