For the coastguard, water safety groups, police and search and rescue units, the silly season starts at Labour Weekend.
After a winter of cabin fever, the first of the spring/summer season holidays often sees people drag out the boat and - despite endless public education campaigns - take risks.
Search and Rescue (SAR) co-ordinator for Northland, Senior Sergeant Cliff Metcalfe says that year after year the same behaviour sits behind most boating mishaps - which is "frustrating, desk banging stuff".
"As we're getting warmer weather after you've had a wet winter, the boat's been sitting in the shed, people seem hellbent on getting out on the water. They don't always check the weather, they don't check the boat ... they just think it's warmer, it's time to be out there."
Mr Metcalfe said the checklist people should always apply was not complicated. It was simply a matter of common sense.