Position : Latitude 53 11'.18 N Longitude 4 12.5'W Satellite Derived Position 0'.01S 0'.08E Lock Basin Light: F.WR Vis R225 - 357 W 357 - 225 Dangers / Restrictions There are no known dangers away from the extremities of the channel. A strong tide can be experienced across the entrance to the Tidal Pontoon Basin. Jet Ski's are not permitted in the Marina. A 5 knot speed limited exists in this area of the Straits. In addition please observe a DEAD SLOW speed limit to avoid creating unnecessary wash. Marina Approach Contact Lock Keeper on Channel 80 before approaching. Both the Lock Basin and Tidal Pontoon Basin entrances dry but are accessible HW + / - 3 hours approx. Waiting Moorings 3 Dock waiting Buoys ( approx 2m depth) lie 100m north east of the Lock. Vessels not awaiting berths or unattended are charged at £5.00 per hour. New Lock Entrance Lock Entrance Approach No movements in Lock or Lock Basin without permission To enter lock, from main channel, turn when entrance opens up and keep close to the Outer Tidal Pontoon. Tidal Pontoon Basin Berth Holders Only - Dries at springs. Strong cross tide at entrance. To enter turn when entrance opens up, beware of departing vessels. Shelter In the Lock Basin shelter is almost total. The Tidal Pontoon Basin offers good protection. In the Marina approach there is good holding inshore but do not dry out as it is rocky & foul. Alternatively there are private moorings close to Dinas Boatyard to the south of Y-Felinheli.