Ancient mariners: Greek navy offers taste of life in galleys

In this Sunday, Sept. 16, 2018 photo, Olympia’s captain, Commander Nikos Polychronakis, gives instructions to the visitors at Saronic gulf in southern Athens. The 37-meter (121-foot) wooden vessel moored off southern Athens is an experimental reconstruction of the trireme, the sleek ancient Greek warship that halted a Persian invasion of Europe and ruled the Mediterranean for centuries. Every summer, visitors can get a whiff of life in the galleys 2,500 years ago by joining the crew of the Olympias _ and work up a sweat rowing it. (AP Photo/Thanassis Stavrakis)

In this Sunday, Sept. 16, 2018 photo, visitors row the Olympias, replica of an ancient galley, at Saronic gulf in southern Athens. The 37-meter (121-foot) wooden vessel moored off southern Athens is an experimental reconstruction of the trireme, the sleek ancient Greek warship that halted a Persian invasion of Europe and ruled the Mediterranean for centuries. Every summer, visitors can get a whiff of life in the galleys 2,500 years ago by joining the crew of the Olympias, and work up a sweat rowing it. (AP Photo/Thanassis Stavrakis)

In this Sunday, Sept. 16, 2018 photo, a vessel of the Fire Department accompanies the Olympias, a replica of an ancient galley, at Saronic gulf in southern Athens. The 37-meter (121-foot) wooden vessel moored off southern Athens is an experimental reconstruction of the trireme, the sleek ancient Greek warship that halted a Persian invasion of Europe and ruled the Mediterranean for centuries. Every summer, visitors can get a whiff of life in the galleys 2,500 years ago by joining the crew of the Olympias _ and work up a sweat rowing it. (AP Photo/Thanassis Stavrakis)

In this Sunday, Sept. 16, 2018 photo, Greek Navy sailors unfurl the sails of Olympias, replica of an ancient galley, at Saronic gulf in southern Athens. The 37-meter (121-foot) wooden vessel moored off southern Athens is an experimental reconstruction of the trireme, the sleek ancient Greek warship that halted a Persian invasion of Europe and ruled the Mediterranean for centuries. Every summer, visitors can get a whiff of life in the galleys 2,500 years ago by joining the crew of the Olympias _ and work up a sweat rowing it. (AP Photo/Thanassis Stavrakis)

In this Sunday, Sept. 16, 2018 photo, visitors row the Olympias, a replica of an ancient galley, at Saronic gulf in southern Athens. The 37-meter (121-foot) wooden vessel moored off southern Athens is an experimental reconstruction of the trireme, the sleek ancient Greek warship that halted a Persian invasion of Europe and ruled the Mediterranean for centuries. Every summer, visitors can get a whiff of life in the galleys 2,500 years ago by joining the crew of the Olympias _ and work up a sweat rowing it. (AP Photo/Thanassis Stavrakis)

In this Sunday, Sept. 16, 2018 photo, visitors row the Olympias, a replica of an ancient galley, at Saronic gulf in southern Athens. The 37-meter (121-foot) wooden vessel moored off southern Athens is an experimental reconstruction of the trireme, the sleek ancient Greek warship that halted a Persian invasion of Europe and ruled the Mediterranean for centuries. Every summer, visitors can get a whiff of life in the galleys 2,500 years ago by joining the crew of the Olympias, and work up a sweat rowing it. (AP Photo/Thanassis Stavrakis)

ATHENS, Greece — For a NATO-member warship, Greece’s Olympias is pretty unusual. It’s got a zero carbon footprint, no whale-zapping sonar and an antiquated propulsion system.