Dave Johnston is a senior tutor for NAS, running NAS intro and Part 1 courses. He is an avocational underwater archaeologist and sports diver who has learned his archaeology through the NAS training scheme (currently Part 3, working towards Part 4) and by using that training to get involved in various projects. He is a member of the Warship Hazardous Prize Designated Wreck Project Team and also volunteers with the Hampshire and Wight Trust for Maritime Archaeology. He has also run NAS projects at Stourhead Gardens. He is a Trustee of the NAS and sits on various of its committees. A PADI DM and BSAC OWSI, he is boat officer and webmaster for the NAS's dive club (www.nasac.org.uk) and is on the committee and is webmaster for the newly founded Association of Protected Wreck Licensees (www.protectedwrecks.org.uk). In order to pay for the archaeology he occasionally he finds time for his day job, running microscopes for the Medical Faculty at Southampton University.