On the south side of the peninsula there is a large marina which is also being used by fishing boats and other ships of comparable size.
On the north side however there is the pier where the ferry boats moor which sail from the other islands to Agios Nicolaos. It also sections the port basin off where the cruise vessels harbour which go e.g. for day cruises to the lepers' island of Spinalonga.
The third port is being used by the small fishing boats. It is the Lake Voulismeni which is a natural freshwater lake. The lake is connected to the northern port basin by an artifical channel, and the boats pass under a very low bridge when sailing from the lake to the port basin and back on this channel.
The touristic live of Agios Nicolaos concentrates there by the northern port and mainly around the Lake Voulismeni.
The nearest international commercial airport
is located barely an hour's drive West, short before Heraklion
. So for your holidays in Agios Nicolaos it is advisable to hire a car
e.g. at the Eurocars Rent-a-Car Company
, the more so as from here the entire eastern half of Crete
reveals itself for exploration.