Notice of site closure

The National Diving & Activity Centre is permanently closed. We are not taking bookings for leisure activities or public diving.

We’d like to thank all our customers for their support over the years.

Archive for the ‘Underwater Attractions’ Category

New underwater attraction at the NDAC – Warrior Tracked Vehicle WR 38KG35

Wednesday, September 1st, 2021

New underwater attraction at NDAC Scuba Dive site

We are delighted to be working with The Royal Engineers and their dive teams. In particular the team from 29 EOD & S Group Support Unit Dive Team, based at Wimbish, who have kindly acquired a new attraction to be placed in the water at the NDAC in the form of an Armoured Warrior Tracked Vehicle.


Cromhall Diving underwater attractions find new home at NDAC

Friday, October 2nd, 2020

Cromhall Diving Mine finds new home at NDAC

Sadly, as many of you will know, the Cromhall Quarry Diving Centre closed during 2020. It has been a real loss to the diving and open water swimming communities.

Simon and Maggie, who many of you will know from Cromhall Diving, kindly donated the National Diving & Activity Centre some of their items that we will be using as underwater diving attractions.

Simon visited us recently to hand over the items, and as a small token of our appreciation we plan to paint up the MK XV11 Sea Mine and name it after him.

The new items will be given a good home at the National Diving & Activity Centre. We hope they will provide interesting attractions to dive as a small legacy to the Cromhall centre, Simon and Maggie.

Cromhall Diving Underwater Attractions

Meet Bertie the Fish

Monday, June 17th, 2019

Bertie the Sturgeon Fish

Meet Bertie, our latest attraction at the National Diving & Activity Centre.

Bertie is a Sturgeon fish and he’s been rescued from a small pond to live his life and explore our much larger pond!


New underwater scuba diving attraction at NDAC Chepstow

Wednesday, March 27th, 2019

Hyperbaric chamber scuba diving attraction NDAC Chepstow

This week we have been lowering our new scuba diving attraction into place at the National Diving & Activity Centre.

The Hyperbaric Chamber was lowered using a 5 tonne lift bag and a lot of assistance.


Final checks for new underwater attraction

Tuesday, March 19th, 2019


DDRCFinal checks are being carried out prior to the sinking of our latest underwater attraction, a Hyperbaric Chamber.


New underwater attraction arrives at the NDAC

Friday, January 4th, 2019

Hyperbaric Chamber

DDRCA new Scuba Diving attraction was delivered to the National Diving & Activity Centre today.

The Hyperbaric Chamber has retired from its previous life at DDRC Healthcare and will be placed at 20-30m as an underwater diving attraction.


Deadly Dinosaurs and Steve Backshall in Chepstow!

Tuesday, August 28th, 2018

Watch Deadly Dinosaurs on BBC IPlayer

Deadly DinosaursCBBC’s Steve Backshall was recently at the National Diving & Activity Centre in Chepstow, filming for his BBC show Deadly Dinosaurs.


Caroline – New Diving Attraction at the NDAC Chepstow

Monday, April 4th, 2016

Caroline - New Diving Attraction at the NDAC Chepstow

Preparing the new underwater diving attractionOver 20,000 people saw our AprilFools post last week, but we’ve got some very exciting real news today for divers!

Later today we will be installing our latest underwater attraction, ‘Caroline’.

This 35 Tonne steel trawler traveled over 500 miles from Aberdeen in 2013 to its final home as an underwater diving attraction at the National Diving & Activity Centre.

We have recently been completing the final works to our latest underwater attraction, and this weekend the original prop was welded into place.

The new boat, named ‘Caroline’ is 11.33 metres long and the plan is to place her in the water at around 25m, providing a fantastic wreck diving experience.





National Diving & Activity Centre awarded 2015 Certificate of Excellence from TripAdvisor

Saturday, August 22nd, 2015

NDAC awarded 2015 Certificate of Excellence from TripAdvisor

The National Diving & Activity Centre in Chepstow has been awarded a 2015 Certificate of Excellence from TripAdvisor, the world’s largest travel site.

TripAdvisor awards a Certificate of Excellence to accommodations, attractions and restaurants that consistently earn great reviews from visitors.

TripAdvisor offers advice from millions of travelers and is the largest travel community in the world, reaching 375 million unique monthly visitors, and more than 250 million reviews and opinions covering more than 5.2 million accommodations, restaurants and attractions.

Thanks to all our customers who have taken the time to write a review of the centre. If you would like to leave your own review, please visit the NDAC page on TripAdvisor.

Four new underwater attractions at NDAC dive site

Friday, July 29th, 2011

Underwater Attractions at NDAC Dive Centre

It has been a very busy week at the National Diving & Activity Centre with the installation of four new underwater attractions.

We now have a new addition to Land Rover Lagoon, a Double Decker Bus, a Single Deck Bus and a 16 tonne Abbott Self Propelled Gun.

All the attractions are ready to dive now, so why not pop down and have a look yourself – with so many new attractions you might want to book a weekend with us in one of our Wooden Wigwams.

The Busses
The first bus is a traditional 56-seater single deck bus that weighs in at 6.5 tonnes and has been used in active service throughout Cardiff over the past 15 years. She has clocked up an impressive 500,000 km so I’m sure some of you may have even travelled on her at some stage!

The second vehicle is an impressive Double-deck bus; she seats around 60 to 80 passengers, It is around 10 meters in length, 4.5 meters high and her gross weight is around 12 tonnes.

We believe these underwater busses will not only provide a stable, safe and exciting training platform but also to act as a swim through attraction for the more confident divers amongst you. So whilst our students are conducting their skills and drills above you could be swimming through underneath them – You won’t even need a ticket!

The FV433 Field Artillery Abbot SPG
The Abbot Tank or ‘Self Propelled Gun’ built by Vickers was used by the British Army between 1965 and 1995 and is still in service with the Indian Army.

In its day the Abbot FV433 was able to swim across water due to having a flotation screen fixed around the hull, which would be raised to provide buoyancy. The action of the tracks was sufficient to drive it forward at about 3 knots. Each swimming Abbot would of been supported by a fully amphibious Stalwart Mk 2 High Mobility Load Carrier that carried additional ammunition.

This Abbot’s floating days are long over and it now is retiring happily at the NDAC quarry, reunited with it’s old friend the Stalwart ‘Stolly’.

Both buses are under 20 meters and the Abbot is sitting around 30 metres. The new landrover is situated around 10 metres.

None of this would of been possible without the help from the Corps of Royal Engineers and our thanks goes out to them.

The Corps of Royal Engineers are unique with all their "Sappers" being multi skilled soldiers, combat engineers and tradesmen working alongside all parts of the Army they play a vital role in the effectiveness of the British Army and the United Kingdom in both peacetime and on Opertations.

Read more about the Royal Engineers>


Double Decker Bus


Royal Engineers

Abbot Tank



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