Three men were rescued after their 39-foot boat sank about six nautical miles northwest of Oceanside Harbor early Thursday. The men survived, but the cause of the sinking, the location of the wreck and the whereabouts of a dog that was aboard remain unresolved.
According to FOX 5 San Diego and KUSI News, citing a Coast Guard report, the crew issued a mayday call at about 5:30 a.m. and reported that the vessel was taking on water. The transmission soon stopped. Oceanside Fire Department’s Marine Safety Unit was notified near the harbor at about 6:10 a.m., but the occupants were no longer responding to radio calls.
Because the boat’s exact position was not known, rescuers concentrated on an area roughly six nautical miles northwest of the harbor using the last radio signal. An Oceanside Fire Department crew member spotted the three men in the water. Coast Guard and fire personnel brought them aboard, while a later helicopter search did not find the dog or the sunken vessel.
The rescue confirmed survival, not the sinking’s cause
The men told fire officials that they put on life jackets and entered the water before the boat went down, and that no one else was aboard. They were described as exhausted and suffering from mild hypothermia. All three declined medical treatment after being brought aboard, where they received food, water and warm clothing before returning to Oceanside Harbor.
Those details establish how the men were found and recovered, but they do not explain why the vessel began taking on water or whether any equipment failure, damage or other circumstance caused the sinking. The available search account also does not establish whether the dog survived or where the wreck lies.
What boating rules add to the picture
The men’s use of life jackets is consistent with California’s baseline equipment guidance. The California Division of Boating and Waterways says vessels 16 feet and longer generally must carry one properly sized, Coast Guard-approved wearable life jacket for each person aboard, along with at least one Type IV throwable flotation device.
California also requires operators to report boating accidents involving a complete loss of a vessel to the Division of Boating and Waterways within 10 days, according to the agency’s accident-reporting guidance. That requirement concerns the vessel’s loss and reporting obligations; it does not by itself identify the cause of Thursday’s sinking.
A separate harbor issue should not be conflated with the offshore sinking
Oceanside has separately documented shoaling in the harbor channel. The City of Oceanside says shoaling narrowed the safe navigation depth after the Corps’ May 2026 dredging and prompted a fall operation to restore it. That information concerns navigation inside the harbor channel, not the reported sinking site six nautical miles offshore, and the available account does not connect the two.
The three men were returned to Oceanside Harbor and released. The remaining questions are whether investigators can determine what caused the boat to sink and whether further searching locates the missing dog or the wreck.
