“We’re all puppets on the Führer’s string these days, I’m afraid,” Conti replied, shaking his head. Like most of his countrymen, he had no idea that forces were at work in Rome that would, in a matter of days, oust Mussolini from power and announce an armistice with the Allies. “To think that we had a larger submarine fleet than the Germans in 1939, yet we now take our operational orders from the Kriegsmarine,” he added. “The world is not so easily explained at times.”

“It doesn’t seem right.”

Conti gazed across the sub’s large forward deck. “I guess the Barbarigo is too big and slow for the latest armed convoys, so we are now little more than a freighter. At least we can say our Barbarigo attained a proud wartime record before her conversion.”

Launched in 1938, the Barbarigo had sunk a half dozen Allied ships in the Atlantic during the early days of the war. Displacing over a thousand tons, she was much larger than the feared Type VII U-boats of the German wolf pack. But as German surface ship losses began to mount, Admiral Dönitz suggested converting several of the large Italian sommergibili into transport vessels. Stripped of her torpedoes, deck gun, and even one of her heads, the Barbarigo had been sent to Singapore as a cargo vessel, filled with mercury, steel, and 20mm guns for the Japanese.

“Our return cargo is deemed highly critical to the war effort, so somebody has to act as the mule, I suppose,” Conti said. But deep down, he was angered by the transport duty. Like every submariner, he had something of the hunter in him, a longing to stalk the enemy. But now an enemy encounter would mean death for the Barbarigo. Stripped of its weaponry and floundering along at twelve knots, the submarine was more a sitting duck than a feared attacker.

As a white-tipped wave splashed against the bow, Conti glanced at his illuminated wristwatch.

“Less than an hour to sunrise.”

Heeding the unspoken command, Catalano hoisted a pair of binoculars and scanned the horizon for other vessels. The lieutenant followed suit, circling the conning tower with his eyes, taking in the sea and sky. His thoughts drifted to Casoria, a small town north of Naples, where his wife and young son awaited him. A vineyard grew behind their modest farmhouse, and he suddenly longed for the lazy summer afternoons when he would chase his boy through the sprouting vines.

Then he heard it.

Over the drone of the submarine’s twin diesel engines, he detected a different sound, something of a high-pitched buzz. Snapping erect, he didn’t waste time fixing a position.

“Secure the hatch!” he cried.