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Welcome Aboard

You've arrived at the digital home port of Marine Publishing Co.'s annual field guide Know Your Ships: Guide to Boats & Boatwatching on the Great Lakes & St. Lawrence Seaway, marking its 61st year in 2020.

Meant not only for those with a casual interest in the parade of nautical commerce that passes our shores, Know Your Shipsalso has plenty to interest the more serious-minded individuals who have a passion for the ships that ply the inland seas.

Order your 2020 KYS now!

Canadian Orders

We are sorry, but we will be unable to fill Canadian orders at this time due to the border closing. Unfortunately, neither the Canadian nor American government considers Know Your Ships to be essential goods. Orders will be held and filled as soon as civilian border crossing is permitted. If you want to pay the additional cost of international mail ($24.50 U.S. for a book), contact Roger LeLievre at

History Hounds with Roger LeLievre

Watch Know Your Ships editor and publisher Roger LeLievre on History Hounds.

Roger LeLievre Interview

Watch an interview with Know Your Ships editor and publisher Roger LeLievre.

Roger LeLievre Facebook Live Chat

Watch the live Q & A with Know Your Ships editor and publisher Roger LeLievre.

Know Your Ships

Besides the essential stats (owner, year built, length, capacity and former names) for hundreds of freighters, tugs, barges, Coast Guard cutters, cruise ships, and saltwater visitors, Know Your Ships also contains essentials about the cargoes the big boats carry,where they load and unload, the locks, canals and waterways they transit, what the boat whistles mean, stack markings and nation flags, plus ways to follow the freighters as they make their way from port to port. In addition, there's a section on Great Lakes marine museums as well as a new Spotlight section that includes stories about ships, sailors and maritime adventures.

If you'd like to find out more about the 2020 edition of Know Your Ships, visit our 2020 KYS section.

More from KYS!

Our popular Stack & Flag Chart, has been newly updated and includes nearly 100 current and historic fleets with over 200 funnel marking and house flag illustrations. It measures 18x24 inches and is perfect for framing.

Check out our fashionable t-shirts and hats. If you're proud to be from the Great Lakes region, these shirts and hats are just the thing to show your passion.

KYS Website Updates

Fleet updates for 2020 highlighting new additions, ships still in lay-up, and those being scrapped can be found on our Updates Page.

Thanks for stopping by!