Online VLM and TopoMap and OpenSeaMap are offset

Hello,
i see there is an offset, at least around Martinique.
if i put a POI on the "Diamant Rock" with the TopoMap, it will be slight of to the right on the VLM map.
And the marinas and buois from OSM are also off.
OSM and TopoMap are in sync
Is there a way to manually calibrate those, or it's on your side?
Cheers

There is nothing you can do about that, and there is nothing we can do either. GSHHS are quite wrong in this area, I have reported it years ago to GSHHS guys, they acknowledged it but didn't fix it.

Only solutions are:
Create barriers or import a shapefile (if you can find it) that will replace the GSHHS, this is doable in qtVlm.
Use a vector chart (best solution), S57 or S63.
--Philippe