No, the wreck in the top left of the first pic is a bit of the artificial (Mulberry) harbour that broke off when being towed over for D-day in Normandy. It sits maybe 1 mile off the Essex coast and marks the edge of the shipping channel from the shallow mud flats. It’s massive when you sail around it.
The wreck you are thinking of that’s loaded to the brim with unstable munitions is the Montgomery, it’s on the Kent side of the Thames, unless you have a super strong lens you can’t see it from our side, just as well really.
Will drop you a bell next time at Camber, the place rocks!