B-17 Flying Fortress Wreck Diving in Calvi Bay, Corsica

The B-17 in Calvi Bay is one of those wrecks that still looks like the machine in the history books. She is a B-17G Flying Fortress. In February 1944 she was damaged over Italy, made a water landing in the bay, broke her tail, and sank. Today she sits upright at about 27–28 metres: wings, engines often visible, cockpit still a cockpit.

It is a boat dive from Calvi, an Advanced Open Water dive, and a French Mediterranean dive, which means FFESSM language sits alongside PADI in the briefing. Pair her with the Alcione C if you have a second day and you like wrecks that tell different wars.

If you are collecting European wreck dives, Corsica is not only granite and posidonia. This bomber is why wreck divers fly to Haute-Corse. This guide covers the story, the profile, access, tickets, what you will see, how to dive an aircraft, and how to run Calvi without rushing.

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The Story of the Wreck

In the winter of 1944 the air war over Italy was a daily grind of flak, fighters, and long over-water flights back to bases. A B-17G, damaged on operations over Italy, did not make a runway. The crew put her down on the water in Calvi Bay.

A water landing is not a gentle parking manoeuvre. The tail broke. The Fortress sank. What you dive is the result of that break and of eighty years of Mediterranean weather: an upright bomber on sand, incomplete, still readable as a four-engine aircraft.

This is a wartime aircraft wreck. Treat it as heritage and, where the history includes loss of life, as a grave. Do not take fragments. Do not “tidy” a gun for a photo. French cultural heritage rules apply in Corsica as they do on the mainland. The wreck is not a prop box.

Calvi itself was a military landscape in that war. The bay that looks like a holiday postcard in August was a working piece of the Mediterranean front. Diving the B-17 is the underwater half of that story. The citadel on the hill is the dry half.

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Depth and Dive Profile

Image by Martin Str

Twenty-seven to twenty-eight metres, upright. That is a gift. You are deep enough that the light is blue and the dive feels like a wreck, and shallow enough that Advanced training covers the number. You are not in Donator territory. You are not in Britannic territory.

A typical profile is a shot or GPS descent, a slow circuit of the wings, time at the engines, a look into the cockpit from outside, and an ascent with a safety stop. Bottom time is reasonable on air; nitrox makes a second dive in the day easier if you pair with another site.

Water in Calvi Bay in season is Mediterranean: comfortable in summer, cooler in spring. A 5 mm suit is common from June to September; May and October divers often want more. Visibility is often 15–25 metres in settled weather. After wind, the bay can stir sand and the bomber can disappear into a smaller world. That is when you cancel or pick a different site, not when you “try anyway.”

Because the wreck is compact compared with a 100-metre ship, one dive can show you the whole aircraft if you do not waste the first minutes spinning. Compact is not the same as simple. Aluminium snags. Broken tail means debris fields. Watch your gauges; 28 metres still uses gas fast if you swim hard.

For the 18 / 30 / 40 metre ladder, see how deep you can scuba dive.

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Accessibility: Boat, Season, and Permits

The B-17 is a boat dive from Calvi. Centres on the Calvi / Lumio coast run the bay. There is no practical shore dive that keeps you inside a sensible surface swim.

Season for visiting divers is roughly May to October. July and August are busy on the surface as well as underwater. Book the wreck day rather than assuming a walk-up. Mistral and local wind close the bay. Corsica is not a lake.

As a recreational guest of a licensed centre you are not filling in a separate bomber permit, but you are diving in French waters with French heritage rules. Follow the brief. Do not freelance a second drop with a rental RIB and a plotter because you “already saw it once.”

If you have extra days, the same boats often run other wrecks and reefs. The pairing this article recommends is the Alcione C: a different wreck, still Corsican, still worth a separate brief. Read Alcione C wreck diving in Corsica when you plan the week.

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Skills and License Required

PADI Open Water (18 m): Not this dive. Twenty-eight metres is past the Open Water limit. Do Calvi’s shallower sites and come back with Advanced.

PADI Advanced Open Water (30 m): The correct recreational ticket. Be current at 25–30 metres, not merely holding a card from a tropical holiday three years ago. The Advanced Open Water certification guide is the course; recent deep dives are the filter.

PADI Deep Diver (40 m): Not required for 28 metres, but useful if your Corsican week also includes deeper wrecks.

FFESSM: N2 is the usual French comparison for this depth. N3 is the 60-metre recreational-technical overlap in the French system and is not needed for the B-17 itself. If you are a French-trained diver, bring the carnet the centre expects. If you are PADI-trained, do not argue that N2 is “just Open Water.” It is not.

Wreck specialty: Required if you plan to enter fuselage or broken tail sections that qualify as overhead. The standard Calvi B-17 dive is an exterior circuit. Do not upgrade yourself mid-water. Take a wreck diving certification before you treat aircraft interiors as swim-throughs.

Buoyancy over aluminium should be light. Knees on a wing are how wrecks lose skin.

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What You Will See

Wings. Engines, often still in place enough to photograph. Propellers or hubs depending on the year and the last storm. A cockpit that still reads as a workplace. The broken tail is part of the story: the aircraft is not complete, and you should not expect a whole Fortress silhouette from every angle.

Marine life is the Calvi mix: fish using engines as caves, the occasional grouper, and posidonia nearby if you drift off the sand. The star is the aeroplane. Dive it slowly. One extra circuit beats a frantic lap.

Lights help in the cockpit shadow. Wide-angle lenses help on the wing. Do not move wreckage. Do not hang on guns. This is a World War II aircraft in French waters, not a theme park.

Photographers should agree a direction of travel with the guide so six divers are not kicking the same engine. Compact wrecks get crowded. Manners are a skill.

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How to Dive It: Currents, Lines, and Penetration Rules

Calvi Bay can be kind. It can also push. Descend with the group. If you miss the wreck in reduced vis, blob up. Searching the sand at 28 metres for a bomber you cannot see is a poor use of gas.

Swim a circuit: wingtip to wingtip, engines, nose, a look at the break. Keep off the structure. Watch for fishing line. Aircraft wrecks collect it.

Penetration: if the fuselage invites you in, that invitation is for wreck-trained divers with a plan. Open Water and Advanced without wreck training stay in open water around the plane. Light through a hole is not an exit plan.

War-heritage no-touch applies. If you need a wider habit list, use scuba diving safety and the wreck diving hub: gas, buddy, abort, no souvenirs.

Ascent: SMB if the boat asked for it. The bay has traffic in summer. Be visible.

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Practical Logistics

Fly into Calvi (Sainte-Catherine) in season, or into Bastia and drive. Stay in Calvi if the B-17 is the point of the trip. The citadel town is small; book beds and boats early for August.

Ask the centre how they brief mixed nationality groups. Corsica is used to PADI, SSI, and FFESSM cards. Bring your certification and logbook. Ask whether the B-17 is running that week and what they pair it with. The Alcione C is the pairing to request if you want two wreck stories, not two identical reefs.

Hire kit is available. Bring your computer, DSMB, and torch. If you have a wreck reel, leave it in the bag unless the dive is a planned penetration.

Do not pick a centre based on who claims to be the only one that “owns” the bomber. Pick the one that talks about wind, heritage, and group size.

If you later dive the mainland, the Donator off Hyères is a different French wreck: deeper, current-prone, gorgonian-covered. The B-17 is the gentler of the two. That is a feature.

Calvi in August is a holiday town. Book the boat, then book a second wreck day rather than stacking the B-17 and a deep site on tired legs. Aircraft wrecks reward slow circuits. If you only get one lap because the group is large, ask to repeat the site. Repeating a 28-metre bomber is better diving than collecting a new name you barely saw.

Bring the logbook. French boats like to see recent deep dives, not only a card issued in a swimming pool. If your last 25-metre dive was three years ago, say so and take a warm-up in the bay.

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Final Thoughts

The Calvi B-17 is a 27–28 metre, upright Flying Fortress with a clear story: damaged over Italy, ditched in February 1944, tail gone, still a bomber. Advanced Open Water and a boat from Calvi get you there. Wreck training is for interiors. N2 is the French card that matches the depth.

Dive her as heritage. Pair her with the Alcione C if you can. Leave the aluminium where it lies. One slow circuit with good buoyancy is worth more than a frantic second dive you do not remember. The bay will still be here next season.