Four boaters whose boat started taking on water on the St. Lawrence River Sunday afternoon were rescued by U.S. Coast Guard and Canadian Coast Guard crews.

At 12:54 p.m., a search-and-rescue coordinator at Coast Guard Sector Buffalo, overheard a broadcast from Joint Rescue Coordination Centre Trenton, Ontario, that a 36-foot vessel with four people aboard was taking on water.

RCC Trenton was the search-and-rescue mission coordinator, and Buffalo directed the launch of a rescue boat crew from Alexandria Bay.

The boat was in the vicinity of Grenadier Island, near the St. Lawrence Seaway.

A rescue boat crew arrived on scene and started the boaters them. As the boat was being pumped out, the Canadian Coast Guard 47-foot rescue boat Cape Hearn arrived and relieved the Station Alexandria Bay boat crew.

The Alexandria Bay boat crew returned to base once the Cape Hearn crew had the flooding under control.

The names and hometowns of the rescued individuals will not be released, the Coast Guard said.

“Because we share a national border with Canada, and we share waterways like the St. Lawrence Seaway, it takes a lot of coordination to pull successful rescues off," said Paul Angelillo, a search-and-rescue coordinator at Sector Buffalo. “But because we train together and work these cases together all the time, we trust each other in all aspects of the search-and-rescue coordination process.”