Aegina Harbour, being close to Athens, is always crowded - especially during weekends. Yachts moor stern/bow-to using their anchors either on the north quay, where there are depths of 2.0 – 2.5 metres, or on the south quay, where there are depths at the west end of 5.0 - 6.0 metres.
Outside the harbour there is a small marina, Aegina Marina, protected by a long detached breakwater, where yachts berth on long pontoons. However, this is usually filled with local yachts on permanent moorings and there is little space for visitors.
Yachts should keep well off the quay in either spot, since the ferries cause quite a wash on entry.