Raymarine A plotter

[Erwin Swart]

Have a raymarine A serie plotter for a few years an pleased with it. Though i found recently an error in the tides in the raymarine compared to real tides. Differnces were approx 30 min.
Does somebody else the same expeirience and is there a solution?

Grtz

 

[[70521]]

Are you in a primary or secondary port?

 

[Erwin Swart]

both, looked at Ijmuiden (the Netherlands), thames, dover, lowestoft, whitby and so on and all tides weren't correct as were mentioned in harbours.

so have feeling that system isn't correct.
hope that other people also noticefied this problem