To inquire about emergency situations, including ferry activity during storms, call either of these two numbers:

2987 6348 or 2987 1248

Based on previous history, when a Signal 8 is hoisted, the ferry to/from Central may still operate but, slower than usual.

Black rain storm signal will also slow boating activity, but all DB ferrys are certified to run under restricted conditions.

Best bet is to call the hot lines if you want to know the situation.