Sea Cave Rescue
In April 1993, a Coast Guard helicopter crew responded to a report of two brothers trapped inside a remote sea cave beneath Cape Lookout on the north Oregon coast.
From the outside, the cave did not appear especially threatening. It had a wide, high entrance. But like many sea caves along the Oregon coast, it narrowed the deeper you went—both horizontally and vertically—creating a funnel for swell energy and tidal movement.
The rescue swimmer was deployed near the entrance and free-swam inside.
What he encountered was well beyond what the crew had anticipated.
The internal hydraulics were violent and unpredictable. Surge amplified as it moved deeper into the cave. After the only survivor the swimmer located entered the water from the ledge he had been perched on, the swimmer quickly realized they could not swim out.
The current was overpowering.
It repeatedly drove both men against the cave wall where waves slammed them into rock. Further back inside, large deadheads—uprooted trees washed out to sea—were being hurled around like toothpicks.
The swimmer shifted from rescue mode to survival mode.
Outside, the helicopter crew recognized the distress. Using the same current that was pinning the swimmer inside the cave, they floated the rescue basket into his reach.
To do so, they put nearly half the rotor disc inside the cave entrance.
The swimmer drove his fist through the metal rods of the basket and rotated his hand to prevent separation. With his other hand, he wrapped the survivor’s T-shirt around his grip so he wouldn’t lose him.
The crew pulled them both out.
It was a heroic effort by everyone involved.
It also exposed something that needed attention:
Our rescue community understood very little about sea caves—and even less about how tides, swell period, surge harmonics, and confined geometry can radically intensify as you move deeper inside.
Community Evolution
In 1995, the Coast Guard formally acknowledged what many already knew: rescue swimmers were being thrust into increasingly complex environments without specific preparation for those hazards.
Advanced, scenario-driven training was needed.
The rescue swimmer community started to work on a solution with an advanced rescue swimmer school.
The value of that training quickly became obvious—not just for swimmers, but for pilots and flight mechanics as well. Complex hoisting environments require a shared mental model across the entire crew.
The Coast Guard’s Advanced Helicopter Rescue School (AHRS) was born.
Over the last three decades, AHRS has become more than a school. It has served as the Coast Guard helicopter rescue community’s laboratory—where instructors test techniques, pressure assumptions, and refine crew coordination in dynamic environments.
Sea cave rescue became one of those focus areas.
Proof of Progress
In 2016, an AHRS-trained aircrew responded near Cape Kiwanda, Oregon. Two rescuers had become trapped in heavy surf after a jet ski accident while attempting to save another individual who had fallen into the water.
The rescue swimmer on that crew was a former AHRS instructor—someone who had long said he would never enter a cave in dynamic water conditions.
This time, the conditions, aircraft positioning, crew coordination, and shared risk assessment supported a different decision.
The case demonstrated how far the Coast Guard rotary-wing community had progressed—not because the risk had disappeared, but because the understanding had deepened.
Here is the video of that rescue:
Cape Kiwanda, OR Sea Cave Rescue
The difference between 1993 and 2016 was resourcefulness and knowledge born from two decades of AHRS training and innovation.
What We’ve Learned
Since those early incidents, our understanding of helicopter-assisted sea cave rescue has evolved significantly.
In the next two posts, I’ll break this down into two categories:
1. Key considerations before attempting a sea cave rescue.
2. Helicopter-assisted sea cave rescue techniques—what works, what doesn’t, and why.
Sea caves punish overconfidence.
But like most high-risk environments, they reward disciplined preparation.