The harbour of Port Blair is well supplied with buoys and harbour lights, and is crossed by ferries at fixed intervals, while there are several launches for hauling local traffic. On Ross Island there is a lighthouse visible for 19 m.
Ice-breaking car ferries run across the lake all winter.
The Black Isle branch of the Highland railway runs from Muir of Ord to Fortrose; steamers connect Cromarty with Invergordon and Inverness, and Fortrose with Inverness; and there are ferries, on the southern coast, at North Kessock (for Inverness) and Chanonry (for Fort George), and, on the northern coast, at Alcaig (for Dingwall), Newhallpoint (for Invergordon), and Cromarty (for Nigg).
Ferries ply at frequent intervals between numerous points on its west waterfront and points in Manhattan; there is also ferry connexion with Jersey City.
There are a great number of these ferries, but only a few are used, except by the local people.