Explore the Mighty O
Four Unforgettable Dives on the USS Oriskany
July 15-19, 2026Not just impressed. Not just excited.
Awestruck.
In more than a decade of diving, I can count on one hand the number of wrecks that have truly overwhelmed me with their scale. The USS Oriskany is one of them.
Known affectionately as "The Mighty O" and "The Great Carrier Reef," the USS Oriskany rests on the seafloor approximately 22 nautical miles southeast of Pensacola Pass. Once a proud aircraft carrier that served in both the Korean and Vietnam Wars, she now serves a different mission: providing one of the most spectacular wreck dives in the world.
At over 911 feet in length, the Oriskany is currently the largest artificial reef on Earth. Standing on her deck for the first time is the closest many divers will ever come to exploring a floating city beneath the sea.
And nothing can truly prepare you for that first descent into total darkness.
Once below the soup, the island comes into view, flags waving, tattered fabrics outstretched with the current. It feels like standing on a mountain top and the gusts of wind blowing your hair around. The feeling and sense of a great beginning to a journey. The flight deck below towards the bow and stern fading into complete darkness. The sheer scale incomprehensible.
A Ship with a Legacy
The Oriskany is more than steel and rivets.
She carried generations of sailors through some of America's most challenging conflicts. During the Vietnam War, she experienced one of the most tragic shipboard fires in Navy history, claiming the lives of 44 sailors. Today, although there are no official burials or designated memorials aboard the wreck, divers have created quiet spaces to honor those who served and those who never came home.
That history is impossible to ignore when you're swimming through her vast structures. Every bulkhead, passageway, and deck feels connected to the thousands of sailors who once called her home.
For me, the connection became even more personal. A close friend's father served aboard the Oriskany during Vietnam. Knowing that added another layer of meaning to every dive.
Dive One: The Flight Deck
My first dive was simple.
Drop in.
Reach the flight deck.
Take it all in.
The moment the deck emerged from the blue, I stopped finning.
I just stared.
No photograph, video, or description can adequately communicate the sheer scale of this wreck. The flight deck stretches into the distance like an underwater runway disappearing into eternity. Even after years of technical diving, standing on that deck made me feel like a novice again.
The Oriskany isn't just large.
She's monumental.
With the eventual sinking of the SS United States, she may lose her title as the world's largest artificial reef. But titles don't matter when you're hovering above 911 feet of aircraft carrier. The majesty of the Mighty O is timeless.
Dive Two: The Hangar Bay
The plan for my second dive was ambitious.
I wanted to reach the propellers.
The current had other ideas.
As I descended onto the flight deck, a strong flow quickly convinced me to rethink my route. Instead, I headed toward one of the aircraft elevators and dropped into the hangar bay.
That decision turned out to be one of the highlights of the trip.
The hangar spaces are staggering.
Massive open rooms stretch before you, framed by huge elevator openings that reveal brilliant blue water beyond. Light pours through the openings, creating scenes that look more like something from a science fiction movie than a shipwreck.
There are moments inside the Oriskany when you realize just how small you are.
This was one of them.
The wreck feels endless.
You could dive this ship a hundred times and still have entire sections you've never seen. There are countless routes, hidden corners, and unexplored spaces *only an original crew members hands may have traced in the days in and out of routine all waiting for future dives.
The hangar bay was both beautiful and intimidating, which is exactly why I loved it.
Dive Three: Chasing the Screws
For my third dive, I had a plan.
I also had a scooter.
Or so I thought.
In a lesson every technical diver eventually learns, I failed to verify the scooter's operational status before leaving the boat. The scooter was dead.
Lesson reinforced.
Fortunately, the current was manageable.
My dive buddy and I finned our way toward the stern. Upon arrival, we descended beneath the fantail and into the darker water below.
Something changed down there.
The noise disappeared.
The busyness of life disappeared.
Running my CCR in the quiet beneath the ship, I found what many divers spend years searching for.
I found my blue.
Everything felt calm.
The water seemed still.
The world above ceased to exist.
Eventually, we reached the sand and kicked underneath the massive hull toward the propellers. There they were, partially buried and tucked beneath the stern.
And surrounded by lionfish.
Hundreds of them.
Some were the size of footballs. Others seemed nearly as large as basketballs. The scene was mesmerizing and slightly surreal, like entering an underwater kingdom ruled entirely by venomous royalty.
As tempting as it was to linger, accumulated decompression has consequences.
Especially when the water is full of jellyfish and other stinging creatures waiting to make your deco stop memorable.
Pro tip: Keep your decompression obligations reasonable. Spending an extra hour suspended in stinging plankton soup is rarely as fun as it sounds.
Dive Four: The Majestic Return
The final dive was the dive I had imagined all along.
This time, the scooter worked.
I dropped onto the flight deck and headed for the stern. From there, I made a wide sweeping circuit around the ship, cruising along the starboard side before dropping toward the level of the hangar openings.
The visibility was excellent.
The wreck seemed infinite.
Then I looked up.
A seven-foot sandbar shark was patrolling above me around 100 feet.
Graceful.
Effortless.
Completely at home.
I watched for a moment before my attention was stolen by something else.
The island.
The control tower.
The heart of the ship.
As I approached, the entire structure rose above me in dramatic fashion. Antennas, platforms, and the immense framework of the island seemed to climb endlessly toward the surface.
I had been impressed before.
Now I was speechless.
This was the moment when the true grandeur of the Mighty O revealed itself.
You simply cannot dive this wreck without feeling awe.
Why Every Wreck Diver Should Visit the USS Oriskany
There are shipwrecks.
And then there are destinations.
The USS Oriskany belongs in the second category.
The combination of military history, massive scale, abundant marine life, deep technical opportunities, and nearly limitless exploration puts her in a class of her own.
Whether your goal is photographing the flight deck, exploring the hangar bays, visiting the propellers, encountering sharks, or eventually penetrating the ship's interior, the Oriskany delivers.
And then leaves you wanting more.
I know because that's exactly what happened to me.
My next visit is already being planned.
Next time, I intend to venture deeper into the ship and uncover some of the secrets still hidden within her steel walls.
Getting There
Pensacola, Florida, is one of the easiest major technical diving destinations in the United States to reach.
The city is served by a commercial airport with daily service from numerous carriers, and divers throughout the southeastern United States can reach it with a comfortable day's drive.
Whether you're arriving with doubles, CCR equipment, scooters, or simply a camera rig, Pensacola is exceptionally dive-friendly and well-equipped for technical visitors.
The Valkyrie Way
Diving the Mighty O
Choosing the right charter can make or break a trip to the Oriskany.
At Valkyrie Dive Adventures, we have worked with multiple operators over the years, and one consistently stands above the rest:
Niuhi Divers.
Captain Andy and his crew know the Oriskany better than almost anyone. Their professionalism, safety culture, flexibility, and deep familiarity with the wreck make them our exclusive recommendation for divers visiting the Mighty O.
Technical diver, recreational diver, photographer, or CCR enthusiast, you'll be hard-pressed to find a better operation for exploring one of the greatest shipwrecks in the world.
Because when you're diving a legend, you deserve a crew that knows every inch of it.
And few know the Mighty O like they do.
RESERVE YOUR SPOT.
July 14th - 18th 2027
Ready to dive in? Valkyrie Dive Adventures offers curated dive trips that allow you to explore some of the most unique and breathtaking dive sites. Whether you're discovering shipwrecks, vibrant reefs, or remote locations, our trips are designed for divers who appreciate the beauty and depth of the underwater world.