I have visited these links and found them all most helpful. I hope you also find something worth while in them.

WWW.THE SHIPSLIST.COM

Passenger Arrival Lists for Miscellaneous Atlantic, Gulf Coast & Great Lakes Ports 1820-1873 FHL and NARA Microfilm Catalog Numbers with links to indexes

SHIPS TO PENNSYLVANIA and OATHS OF ALLEGIANCE, 1727-1775

New Orleans Passenger Lists 1820-1902 FHL and NARA Microfilm Catalog Numbers

Finding Passenger Arrival Records at the Port of Boston, Massachusetts 1820-1943

U.S. Passenger Arrival Lists - FHL microfilm numbers Passenger Lists of Vessels Arriving at New York, NY, 1897-1842. June 16, 1897 - Dec. 31, 1942.

The Winthrop Fleet

Baltimore Passenger Lists 1820-1891

Port of New York, New York, 1820-1957

Mariners and ships in Australian waters

Unassisted Shipping Index Index of Inward Passenger Lists for British and Foreign Ports 1852-1889

New York Passenger Lists 1820-1897 FHL and NARA Microfilm Catalog Numbers

Opening/Closing of Various Canadian Ports and Canals and the Hudson River and Erie Canal

TSL Canadian Arrivals

Palmer List of Merchant Vessels

The S.S. England Page

MARINERS

NorwayHeritage-project

Online German Emigration Databases

Finding Passenger Lists 1820 to the 1940s arrivals at US ports from Europe

Names of Mecklenburg-Schwerin Emigrants 1844-1915

Records of the U.S. Customs Service, 1820--ca. 1891

Peter Hodge's Genealogy Research Page

Canada arrivals,1863