The 40m Chameau (Camel), armed with 44 cannon, had been heading for Quebec with passengers, supplies and coinage to pay troops manning the French garrison town. As many as 316 people are thought to have died when the ship sank.
Storm, born in Indonesia of Dutch parents, had settled in Cape Breton in Canada in 1960, making a living by diving for scrap-metal from the many wrecks in the area.
The Chameau’s position was known, but the the wreck and its contents had been scattered over a wide area. After raising a number of cannon and a silver four-livre piece, Storm managed to secure a treasure-trove licence that gave him exclusive rights to search for and retain any finds from the wreck.
Despite the cold Atlantic waters the divers had only wetsuits for thermal protection, and had to contend with strong tides and frequent fog.
They would sometimes survey under water by riding on a sled made from an old bedframe towed behind their boat, and employed cement-filled bottles as grid-markers.
After the initial pile of coins, the three men went on to recover around 4000 silver and 500 gold coins. Initial sales of some 700 coins and artefacts raised $200,000.
Their achievement was among the earliest instances of a significant treasure wreck being discovered by recreational scuba divers.
Storm continued his treasure-hunting career and wrote the books Canada’s Treasure Hunt and Seaweed and Gold, recalling the highs and lows of his career.