A number of other incidental, but important aspects of maritime regulation are also reserved matters (Scotland Act, Schedule 5). For example:
Registration of fishing vessels under the Merchant Shipping Act 1995 (this is different to the license required to catch fish);
Rules relating to the construction, surveying and certification of fishing vessels;
Rules relating to the prevention of collisions at sea;
Qualifications and training of seafarers, as well as safety on board vessels
Navigational rights and freedoms
As such, these issues are dealt with by the UK Department for Transport and the UK Maritime and Coastguard Agency.