Commissioner Stacey Tannos said the appalling coastal conditions would make any trip on the water extremely hazardous.

“The huge seas pose a serious risk to the safety of recreational boaters – and that of any emergency crews who would be called to their rescue should they find themselves in danger,” he said.

“Put your safety first. It’s not worth risking your life to head out in this weather.”

Boats have been damaged today by being swept from their moorings, grounded on beaches and smashing against other vessels and sea and river walls.

“As well as mooring tackle failing under these extremes, heavy rain can enter boats and if there are no automatic bilge pumps to clear it, the vessel can sink,” Commissioner Tannos said.

With the Hunter region bearing the brunt of much of the bad weather, the Marine Rescue Newcastle unit has sustained severe damage to its base.

A large area of roofing has been ripped from the building, leading to significant water damage to the interiors of the heritage-listed structure, which is now not safe to occupy.

The nearby Marine Rescue Port Stephens and Lake Macquarie units are providing marine radio coverage until the Newcastle unit is operational again.

From Eden in the south to Trial Bay on the Mid North Coast warnings for Strong Winds, Gale Force and Storm Force have been issued by the Bureau of Meteorology for tomorrow. Winds at these levels range from 26 knots (48 km/h) to 63 knots (116 km/h) and gusts can be up to 40% stronger.

When better boating weather returns, Marine Rescue NSW reminds skippers to ensure everyone on board always wears a lifejacket and to Log On with their nearest Marine Rescue radio base so that someone responsible knows they are on the water – and can take rescue action in the event of an emergency.