Tug boats. Gloucester and Boston. Essex? Shipyard launching?

Tug keeping Charles River clear of ice near draw, for coal barges and other traffic |
Ice covered tug, Boston |
Tug keeping Charles River clear near draw of ice for coal barges and other traffic |
Ship and tugboat. Boston Harbor. |
Bull line sugar boat SS Evelyn towed up Fort Point Channel by the tug 'Leader,' alongside the South Station power house |
Ship in harbor. Tug boat 'Juno'. |