[Olsen Towing Line tugboat.]

[Olsen Towing Line tugboats.]

[Olsen Towing Line tugboats.]

[Tracy Towing Corporation tugboat pulling McLain Line barges in New York Harbor.]

[Docked tugboats.]

[Tugboat at dock.]

[Peter Moran tugboat.]

[Alice M. Moran tugboat.]

[Detail of docked tugboat.]

[Men working on tugboat.]

[Grace Moran tugboat at dock.]

[Carol Moran and Peter Moran tugboats.]

[Moran tugboats with ship.]

[Tugboat near dock.]

[Close-up view of tugboat.]

[Lee-Simmons tugboat.]

[Tugboat at dock.]

[Moran tugboat guiding ship to dock.]

[Man aboard Alice M. Moran tugboat.]

[Men working on tugboat.]