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Great Lakes Shipwreck Preservation Society
Dedicated to Preserving our Shipwrecks and Maritime History
"From Prevention to Preservation"
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Website Updated

GLSPS Annual Fundraiser!!

UMSAT Show Website

Virtual Show Only!
The Date for the 2021 UMSAT Show!!

April 8 - 10, 2021

Thursday, 7:00 PM to 9:00 PM
Friday, 7:00 PM to 10:00 PM
Saturday, 1:00 pm to 5:00 PM

Meet and Greet  the speakers
Virtual Event 
starting Saturday at 5:30 PM and going to 7:30 PM

There will be one or two speakers each night 
starting at 7:00 PM

Saturday will have two speakers and a Virtual Social event 
starting at 5:30 PM and going to when ever.....

Stay tuned for the Lineup of Speakers for 2021

For more information on the upcoming 2021 UMSAT Show, please visit

If you are interested in joining the UMSAT Show Planning Committee, please email us at

Or, contact Mary Lillimo at "Show Chairperson", or Phil Kerber, "President", at

We are always looking for speakers that would like to present a great topic about their scuba diving or adventure travel experiences.

Please let us know if you, or anyone you know, would like to be a star and speak at a future UMSAT Show!

Lake Superior Magazine Logo 2x1
Check out the most beautiful magazine ever produced in Northern Minnesota!

GLSPS Project Sponsors

Air Down There Scuba offers free air fills and special pricing on rental equipment while participating in GLSPS projects. Required to show GLSPS Membership Card! 
Thank you, Scott and Tracy!

Aquaventure Dive and Photo Center offers free air fills and special pricing on rental equipment while participating in GLSPS projects. You will be required to show your GLSPS Membership Card.  They have also loaned us a GoPro HD video camera for a few projects. Thank you, Steve and Jolene!

Videos produced by Steve at Aquaventure Dive and Photo Center filmed in Lake Michigan on a Milwaukee charter trip. Click on their above logo for information to join them on a charter to visit these shipwrecks.
Prins Willem
The Dredge 906

HomeWreck Buoys

Shipwreck Mooring Buoys

The GLSPS maintains mooring buoys for various shipwrecks along the North Shore of Lake Superior with the help of several local diving organizations, stores, and individuals.
Mooring buoys on shipwrecks serve several purposes:
  • Improve diver access to the shipwrecks by making the wrecks easier to find.
  • Improve the safety of the dives by insuring that divers have a descent and ascent line that won't disappear like an anchor line can if the anchor breaks loose.
  • Eliminate potential anchor damage to the shipwreck which can happen over time as many groups of divers have to grapple the wreck with their anchors.
The GLSPS performs the process of receiving authorization from the US Coast Guard, Minnesota DNR and Port Authority.  We obtain the funding for the buoys partially from membership dues, Grants, DNR and PADI Aware Foundation.  Membership dues pay for most of the mooring attachment hardware, and installing the mooring buoys. 

We then attempt to locate a partner who has a regular presence on the shipwreck sites to do the annual installation and removal of the buoys and to monitor their condition over the season.  Currently we do not have any sponsors for any of the buoys.  We are seeking any group such as Scuba Clubs or Dive Shops to sponsor one or possibly more buoys.  Please let us know if you would like to sponsor our shipwreck mooring buoy program by going to the "Contacts" section of this website.

We have also assisted the Wisconsin Underwater Archeology Association in placing mooring blocks and buoys on the shipwrecks of the Pretoria and the Sevona located in the Apostle Islands.
Buoy Status
GPS Coordinates
Hesper Installed, June 29 - 30, 2019.
Removed for Winter September 14, 15, 2019 
47o 16.25' N
91o 16.30' W
Just For Fun
Not Planned to be Installed
If you would like the GLSPS to install a Buoy,
Please contact us.
 47o 15.56' N
 91o 17.15' W
Madeira (Stern)
Installed June 8 - 9, 2019
Removed for Winter September 14- 15, 2019
However, a winter surface marker buoy was installed
for use until spring  
  47o 12.360' N
  91o 21.480' W
Madeira (Bow)
Installed June 8 - 9, 2019.  
Removed for Winter September 14 - 15, 2019
 47o 12.360' N
 91o 21.485' W
S.P. Ely
Installed June 8 - 9, 2019

Removed for Winter September 14 - 15, 2019

 47o 00.699' N
 91o 40.684' W
Here is a link to the Photo Page of how the Shipwreck Access Buoys are configured:  Access Buoy Program
If you find any information on this page to be inaccurate, please notify the Access/Buoys Chairperson.