Skippers planning a passage along the north east coast this season may find the following article from the RYA useful:
North and East Coast Passage Planning – Advice for recreational sailors undertaking passages on the North and East Coast of Scotland with a compendium of links offshore renewable operators. Graham Russell, the Planning and Environment Officer for RYA Scotland
You should also definitely have a copy of the RNYC Sailing Directions on board. A new (sixth edition) version was published in April 2021. Email admin@rnyc.org.uk to order your copy. Amendments to earlier editions can be downloaded here.