Search continues for missing boatie Luke Smith, who was thrown overboard at Swansea

The family of a 23-year-old man, missing after a fishing trip went wrong, has warned watergoers to remain safe as a desperate air, land and sea search looks set to enter its fourth day.

The family of missing boatie Luke Smith have not lost hope that the young man will be found as a massive air and sea search pushes towards a fourth day.

The 23-year-old has not been seen since he and three mates were flung into the water when their small boat hit a buoy and overturned in Swansea Channel, the entrance to Lake Macquarie, on Saturday night.

His three friends were hauled to safety by passers-by.

As the third full day of air, land and sea searching was coming to an end on Tuesday, Luke’s family issued a heartfelt statement which included a safety warning.

“We are deeply grateful for the overwhelming support we have received since Luke went missing on Saturday,” the statement said.

Marine Rescue NSW taking part in an extensive search for Luke Smith. Picture: Supplied

“We extend our heartfelt thanks to all the volunteers, emergency services, boaters, and members of the Lake Macquarie community who have dedicated their time and resources to the search efforts.

“Your compassion and willingness to help have provided us with strength and hope.

Missing man Luke Smith, 23. Picture: Supplied

“As the search continues, we urge everyone to prioritise boating safety. It is crucial to wear life jackets and adhere to safety guidelines on the water.

“Particularly in the Swansea Channel and surrounding waters, which can be hazardous, we implore boaters to exercise caution.

“We haven’t lost hope and we won’t give up, and we ask those on the water or near the coast to keep an eye out for anything that might assist in the search.”

The frantic search has prompted a significant outpouring of public grief across Lake Macquarie, with several posts on social media community groups calling for lights to be kept on for Luke as the search continued into its second and third days.

Marine Rescue NSW taking part in an extensive search for Luke Smith, who went overboard his small vessel on Saturday. Picture: Supplied

It also prompted public posts from Luke’s family.

“Luke my son, my boy. Still had so much I wanted to share in life with you,” father David Smith posted.

“Dad will diligently guard and keep the huge space in his heart for you to fill! When I see you again.”

A high school friend has also started a GoFundMe page to raise money for Mr Smith’s family as they spend every waking hour trying to find him.

“Luke’s family, friends, and the wider community have been looking day and night trying to find him and bring him home,” organiser Chloe Kearns said.

“However, as we all know, bills still pile up, and in this uncertain time, Luke’s family should not be worrying about this.

“Thank you to anyone who is able to donate. If you’re unable to do so, please share and continue to keep Luke and his family in your thoughts. Let’s bring Luke home.”

The $5000 target has already been reached and continues to climb.

The search for Luke resumed on Tuesday and nothing of significant had been found as at 4.20pm.

It is being led by NSW Police Marine Area Command, with assistance from Lake Macquarie Police District, Polair, Marine Rescue, Toll Rescue Helicopter, Surf Life Saving NSW, and the NSW State Emergency Service.

Anyone with information is urged to call police or Crime Stoppers on 1800 333 000.

You can donate to the page here.