“This convoy was supposed to put into Cadiz, but after learning that the English fleet lay across those waterways, the admiral decided to make for a French port.

“The Spanish commanders in the convoy objected to this decision. They wanted to be taken to a Spanish port, if not to Cadiz, then to the Bay of Vigo, located on Spain’s northwest coast and not blockaded.

“Admiral de Chateau-Renault was so indecisive as to obey this directive, and the galleons entered the Bay of Vigo.

“Unfortunately this bay forms an open, offshore mooring that’s impossible to defend. So it was essential to hurry and empty the galleons before the allied fleets arrived, and there would have been ample time for this unloading, if a wretched question of trade agreements hadn’t suddenly come up.

“Are you clear on the chain of events?” Captain Nemo asked me.

“Perfectly clear,” I said, not yet knowing why I was being given this history lesson.

“Then I’ll continue. Here’s what came to pass. The tradesmen of Cadiz had negotiated a charter whereby they were to receive all merchandise coming from the West Indies. Now then, unloading the ingots from those galleons at the port of Vigo would have been a violation of their rights. So they lodged a complaint in Madrid, and they obtained an order from the indecisive King Philip V: without unloading, the convoy would stay in custody at the offshore mooring of Vigo until the enemy fleets had retreated.

“Now then, just as this decision was being handed down, English vessels arrived in the Bay of Vigo on October 22, 1702. Despite his inferior forces, Admiral de Chateau-Renault fought courageously. But when he saw that the convoy’s wealth was about to fall into enemy hands, he burned and scuttled the galleons, which went to the bottom with their immense treasures.”

Captain Nemo stopped. I admit it: I still couldn’t see how this piece of history concerned me.

“Well?” I asked him.