For Agios Marcos Shipwreck :
No gale warning.
The reliability of the situation is very good.
Warm sun all day. In the evening, clear skies.
NNE force 4 in the morning temporarily force 3 in the middle of the day. Gusts reaching 22 knots all day. Rippled sea becoming smooth in the middle of the day. Low, short swell from ESE. Excellent visibility.