For U 171 wreck :
Warning moderate gale.
The reliability of the situation is assessed at 90%.
Overcast skies. Light rain. In the evening, overcast skies.
Showers. SSW force 8 in the middle of the day weakening WSW force 6 in the evening. Gusts reaching 50 knots in the middle of the day. Very rough sea. Moderate, long swell from SW. Excellent visibility.