Bing found the following results
Cargo ship cruise to every destination - CARGOHOLIDAYS
Tips for Freighter Cruises - Cruise Critic
Maris Freighter Cruise and Travel Club -- Around the World Cargo Cruises
Freighter Travel Costs And Questions - GoNOMAD Travel
Freighter Travel: Everything You Need to Know - TripSavvy
Passenger Freighters Voyage List - Maris Freighter Cruises
Freighter Travel
What Are Great Lakes Freighter Cruises? Your Questions, Answered
Cargo Ship Voyages
A Freighter Cruise Experience - GoNOMAD Travel