• No strollers on board, since the passageways and stairways are narrow, so bring a baby carrier for toddlers
• Steep stairways and hatches between decks, so wear closed shoes (no flip-flops); helmets are handed out on the lowest deck
• Hands off the exhibits: no climbing on guns or funnels, no food or drink on board, and staff ask for quiet voices

Georgios Averof is an armored cruiser launched in Italy in 1910, and the only ship of its type still in existence. It led the Greek fleet in the First Balkan War and served through World War II.

Kids walk the open decks past the big gun turrets, then take steep stairways down below. The trireme Olympias, a reconstructed ancient Greek warship, docks nearby as part of the same museum.