For Seiun Maru :
No gale warning.
The reliability of the situation is good.
Cloud and sun in the morning, storms developing in the afternoon. Risk of some spots of rain in the morning, showers in the afternoon. In the evening, storms developing.
Heavy showers. E force 2 in the morning temporarily WSW in the middle of the day. Gusts reaching 11 knots in the middle of the day. Smooth to slight sea. Low, short swell from SSE. Good visibility becoming good in the middle of the day then reduced by mist.