Big swells around the Hawke's Bay coastline prevented a number of container vessels from berthing at Napier Port on Wednesday.
Coastguard Hawke's Bay recorded a swell of almost 3 metres on Tuesday night.
Three ships were seen anchored off the coast from Bluff Hill on Wednesday morning and a Napier Port spokesman said they were waiting for the swell to "reduce to a safe level."
Vessels Maersk Garonne, Rio Negro and Spirit of Shanghai were likely to be coming into the port at 8pm at the earliest tonight.
"Although there aren't any really strong winds in Hawke's Bay, way offshore there is quite a blow," he said.
The southeast swell was expected to ease to 1.5m by this evening, according to MetService.
Tomorrow, a southerly is expected to develop early, increasing from 30km/h to 50km/h in the afternoon.
The southeast swell will be between 1 to 1.5m in the morning, changing to a southerly swell and increasing back to 2.5m later on in the day.
The four-day long Megafish competition in Napier is set to start tomorrow.
Your Solutions MegaFish 2021 main sponsor Adam Satherley said the fishing competition will still be happening, regardless of the weather conditions.
"With what's forecast, each night we will have a committee meeting to determine whether we run the competition the next day or not," he said. "The big swell isn't ideal but the event will still be going ahead."
Satherley said if they're unable to fish they will still be giving away prizes in the lucky draw.
Coastguard's Van Tuel advised those going out on their boats to take extra care in the swell over the next few days.
"It's not so bad going out because you're facing into the waves," he said. "The real risk is when you come back into the channel."
"What happens is that the waves following you pushes your boat, if you're not sitting correctly on the wave it can push you sideways on to the wave which can be quite a dangerous situation," Van Tuel added.
Coastguard Hawke's Bay's advice for those out on the water is to know your capabilities of yourself and your boat.