The port of Sao Luishas silted up and has ceased to be important as a port after the construction of the port of Itaqui.
The port of Sao Luis is used mainly by fishing boats and pleasure craft. It has a few piers that allows mooring, but only at flood tide, to ships of 2,5 to 3,5 draft.
Cruisers are urged to take precautions if visiting this port. Policia Federal (immigration) and Customs are at the port
The historical center is at 30 minutes drive away.
Anchor south of Itaqui, near all the pilot boats and tugs. Good
holding in mud. It is possible to tie the dinghy near a sloping ramp
and climb the slippery steps to get ashore.
There is a sort of marina, Marina Aven, which appears to
dry out completely at low water and thus only suitable for catamarans or
others who can sit on the bottom. They have a dock space for four
yachts and (rain?) water is available.