Meet the Team

Company Background:

Portsmouth Marine Training was set up by Steve Dimmer in 2009 to provide training to the berth holders of Southsea Marina. Recognising there was a demand for further training in Langstone Harbour the company quickly expanded to offer RYA Powerboat Training on their 6.5m RIB to the general public. This proved successful, so the company invested in a luxury 40ft Motor Cruiser ‘Gabriele’ to provide RYA Motor Cruising courses. As a keen sailor Steve realised there was a boat missing from the fleet, so we added ‘Jaymist IV’ a 40ft sailing yacht for RYA Sail Training. Our last editions for PWC (Jet Ski) training were a Yamaha and Sea-Doo Spark.  Due to growth, Steve’s wife Nikki, opened a  RYA Training Centre called Chichester Marine Training in Chichester Marina in May 2017.  Through both Chichester and Portsmouth we now offer RYA sail cruising, Motor Cruising, Powerboat Training, PWC (Jet Ski) training as well as a comprehensive range of RYA shorebased courses in our fully equipped classroom at Chichester Marina.

From our humble beginning’s teaching mainly recreational boat owners, we have now expanded to provide specialised training to the commercial sector. We are proud to work with the wind farm industry, the fishing industry, the super yacht industry, scuba divers, harbour boards, universities, and many more.

As the company expanded we employed Peter King as the Business Manager and School Principal at Portsmouth, Gary Plum as the Assistant Manager at Chichester and most recently Kevin Willmoth as the Assistant Manager at. Portsmouth.  We’ve built a small core of highly experienced and talented RYA instructors to help teach our courses, and as Steve is an Instructor Trainer many of our staff have been trained in house.

Although we have grown significantly since 2009 we are still small family run businesses, always willing to go the extra mile for our customers.

The Team:

Steve Dimmer – Chief Instructor and Business Owner – Steve has been messing about in boats since he was a young boy. He started by sailing dinghies, which developed into a passion for offshore yacht racing. Steve has been working on the water in a professional capacity for over 20 years, in the process logging over 150,000 miles, with over 40 ocean passages and 2 circumnavigations. Steve divides his time between sail and power having worked in the superyacht industry and the diving industry before becoming a full time RYA instructor. Steve is a Yachtmaster Ocean, a Yachtmaster Instructor for both Sail and Motor Cruising, an Advanced Powerboat Instructor, and an RYA Trainer of Instructors. Steve also teaches RYA Shorebased Navigation courses and the specialised RYA Diesel Engine, Sea Survival and Radar courses, as well as being a VHF SRC Assessor. He is the Business Owner and our Chief Instructor, with overall responsibility for training.

Nikki Dimmer – Chichester Marine Training – Business Owner and School Principal – The airline that Nikki previously worked for used to own a couple of dinghies and so Nikki went to their race evenings which is where she first discovered sailing.  On meeting Steve she was quickly introduced to bigger boats and is now working her way up to Yachtmaster Sail.  In addition to sailing Nikki enjoys having fun on her RIB and Jet Ski, so much so that she is now a PWC and Powerboat Instructor.


garyGary Plum – Assistant Manager (Chichester )- Gary came to boating late in life, but has taken it up with gusto. He can’t decide if he prefers sailing, powerboating, or motor cruising so is currently working his way through the RYA syllabus on all of these craft, which is no small feat! His previous jobs required a high level of organisation and customer service so he seemed the ideal candidate to become our Assistant Manager. His role is to help with the administration and marketing of the business and customer enquiries.


Kevin Willmoth – Chief Instructor (Portsmouth) – Kevin sailed into Southsea Marina a few seasons back on his old Westerly Longbow.  Since then Kevin has become an Advanced Powerboat Instructor and PWC Instructor.  He enjoys most marine disciplines including motor and sail and back in the day was a DoT BML and BSAC Sports Diver.  As an ex-Metropolitan Police Patrol boat Skipper on the River Thames he has a great back catalogue of marine related anecdotes. 

Gary Martin – Motor Cruising Instructor, Advanced Powerboat Instructor and PWC Instructor – Gary has been on and off boats of all types since he was three weeks old (a very keen boater for a father!), the water is his happy place and he gets huge pleasure from being able to help others so they can get the same enjoyment from being on the water as he does.  Gary initially came to us just to renew his ICC and got so much from the training that he continued to formalise his experience within the RYA Powerboat scheme, before accidentally(!) turning his hobby into a secondary career.   Over the following years he progressed through the RYA Powerboat  scheme to become an Advanced Powerboat Instructor.  Gary is also a PWC Instructor, VHF SRC Assessor and most recently became a Cruising Instructor for Motor.


ian dawesIan Dawes – Sail & Motor Cruising Instructor and Powerboat Instructor – Ian is a Yachtmaster Offshore and has been sailing for over twenty years, having sailed extensively in UK waters and chartered abroad in the Mediterranean with family and friends.  He is a Cruising Instructor Sail  & Motor and a Shorebased Instructor, as well as a keen powerboater and Powerboat Instructor.  Until recently Ian was a yacht broker so if you’re interested in a little advice on the pros and cons of different boats then Ian’s your man!