Sorry your boat is crap, please don’t go into the North Sea in that.
I’ve raced and cruised yachts and dinghies on this coast for 25 years.
RNYC do a guide to ports on the north east coast. Royal Northumberland yacht club. They sell it in local chandlers so you may pick one up down there. If not Storrar marine store in Newcastle will sort you out.
As above though a proper paper chart is minimum alongside digital charts. VHF, flares, spare fuel, spare impellers for outboard, spare sheer pin, spare 2 stroke oil, funnel, lifejacket a, glow sticks, anchor with decent amount of chain plus rope. Knife. Spanners, screw drivers, pliers, wd40, spare spark plugs,
^ just to get you started