The DPVM scheme is detailed in full in Annex I of The NI's Training and Certification Standard, which is updated annually and can be found here....
The DPVM Scheme is split into three key parts, which are described below (and attached, in the scheme layout graphic). Minimum qualifications for entry onto the DPVM Scheme The Nautical Institute es...
You can see the list of Training Centres accredited to hold the DP vessel Maintainer Course here...