Well that's the Kentist Flats Wind Farm. So is it dawn or dusk? I reckon it's dawn for a variety of reasons, so you are possibly heading north-east ish so I reckon you are in The Warp.
Tillergirl was on the right track but it was dusk not dawn! So we were heading west.
Eeyore has it pretty well right although we were further East than the East Last buoy, actually we were still off Minnis.
The other clues can be seen through the rigging - the loom of Sheppey and the chimney on Grain, which was clearly visible as we came round the N.Foreland.