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Welcome to SI Marine Management!

SI Marine Management image We're delighted to be reaching you online! We are celebrating our 43rd year as a full-service marine business. With our two full service marinas on Lake Superior, Barker's Island Marina and Knife River Marina, we're experienced servicing both the sailing and power boating communities. We look forward to the opportunity to assist with finding your next boat or the sale of your current boat.

Happy Boating!

Joe Radtke

Featured Boat
photo of 38' Tiara 3800 Open
38' Tiara 3800 Open
2006 US$ 349,000

This Fresh Water 2006 Tiara 3800 Open is Loaded! Truly the most accommodating adventure boat there is. Lots and lots of storage, heat and air conditioning, seats 9, with a whole lotta diesel horse power to swiftly get you from point A to the fish.  Travel and fish in luxury in this floating paradise.  "Like New" boat without the price.

Available to view Inside climate controlled storage building.


SI Marine Management

250 Marina Drive
Superior, WI 54880, United States

Toll-free 866-396-1822
Tel 715-392-7131
Fax 715-392-7133
Email Us


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