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Visitors Guide


Welcome to Dorset's premier dive centre - Open every day!

Underwater Explorers is Portland's longest established dive shop and school based at a spacious centre on the outskirts of Portland Marina just across from dry suit manufacturers O'Three.

We're only a couple of minutes away from the marina (diving hardboats), on the main causeway to Castletown (club boats, RIB shuttles and free slipway) and the popular shore diving site Chesil Cove.

Air, Nitrox & Trimix Fills
Equipment rental and Servicing

Dive shop with extensive stock

Diver training

Our shop boasts a wide range of diving products from leading manufacturers and we also operate a world reknowned online shop at DirDirect.com. Our modern gas station provides for air, nitrox and trimix fills throughout the year. We have free wireless broadband for visiting customers and plenty of parking spaces too.


We're open EVERY DAY including weekends and bank holidays for fills, rental, sales and servicing.  If you can't make it here, visit our online shop DirDirect.com for world-wide delivery. 

With 15+ years of a track record in diving, Underwater Explorers is best known in the UK for its dedication to cutting-edge equipment and quality training. We are also recognised internationally for running the most unique online dive shop ever, DirDirect.com, where the focus has always been quality and safety without concession - reflecting our approach to diving and training.



We provide a range of services for divers visiting Weymouth and Portland, diving with commercial charters and shuttles, dive clubs traveling with their own RIBs, individuals and groups from around the country as well as our own local diving community. We provide the highest quality of service in what we do and better still, we are all divers ourselves. We are open 7 days a week including weekends and bank holidays, but are equally happy to open by appointment for traveling visitors or those of you who work odd hours (just send us an email or ring in advance).


Our address is:
Unit 1, Maritime Business Centre, Mereside, Portland, Dorset 



Best place to tuck in when the wind's blowing East or NE: Over the past years we've placed special emphasis on Chesil Beach which is part of the Jurassic Coast and a UNESCO World Heritage Site. We've been involved in a number of projects focusing not only on the monitoring of conditions on the surface and underwater, but raising awareness and interacting for a speedy response at times of crisis. Chesil Beach/Cove is listed as one of the best shore diving sites on the South Coast of Britain and fortunate for us, incredibly easy to access any day of the year. With quality cafes and internationally recognised cuisines, plenty of B&Bs and hotels, this part of Dorset is geared up to accommodate divers in the best possible way. Do remember to visit Chesil Cove during your visit as there's free parking in walking distance to the beach and it takes only a few steps to get in the water from the esplanade. Check out our brief Chesil Beach Dive Guide or get daily photographic updates through Chesil Beach Watch.


Quality Equipment and Training - Fully Stocked Shop - Online Sales with FREE UK Delivery


Extensive stock of quality diving equipment specialising in back-mounted BCDs, twinset systems and a range of underwater lights. Providing equipment rental and servicing. Home of www.dirdirect.com .

Top Primers: Intro to UK Diving | Intro to Twins

These 1 day programs introduce you to UK sea diving (UK Intro) or diving in wings and twins. Please note that due to the winter season we now only offer these experience programs for dry suit divers or dry suit trainees until April 2013 (for dry suit courses check out our Specialties).  Run under the supervision of an experienced  instructor, these hands-on skills experiences can be tailored in a way that would suit your needs... Get more information on Into to Twins or if you are interested in our Intro to UK (Sea) Diving, visit our online photo gallery and see just some of the hundreds of dive sites around us, just a brief walk from the centre by beach or by boat from the jetty across the road!...


Try before you buy... All year round


We have an excellent range of equipment available to hire as well as for try before you buy. From Halcyon single and twin tank wing systems to DUI TLS 350 drysuits, lights, scooters ... We offer a complete range of cylinders from singles to twin sets, stage cylinders and the regulator and wing systems to go with them. All our hire equipment is thoroughly maintained and regularly checked. See our complete hire kit list.



"From birth, man carries the weight of gravity on his shoulders. He is bolted to earth. But man has only to sink beneath the surface and he is free." Jacques Cousteau

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