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Great Lakes Shipwreck Preservation Society
Dedicated to Saving our Shipwrecks "From Prevention to Preservation"
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Website Updated

GLSPS Annual Fundraiser!!

UMSAT Show Website

The 2020 UMSAT Show has been CANCELED because of the Corona-virus Outbreak

The New Date and Venue for 2021 UMSAT Show!!

April 9 - 10, 2021

Friday Night at the Movies
7:00 to 10:00 PM

Saturday, 9:00 AM to 6:00 PM
Main Show

(Meet and Greet Party with Food and Beverages)
At The Holiday Inn Hospitality Room
(Next Door to Jimmy's)
7:00 PM to 12:00 AM

Stay tuned for the Lineup of Speakers for 2021

For more information on the canceled 2020 UMSAT show, and 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

Here are the Links to Important Exhibitors Documents
  UMSAT Booth Table Layout at Jimmy's Event Center

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

HomeThomas Wilson 2013 Invasive Species Monitoring Project

Initial Announcement

Thomas Wilson Invasive Species and Clean-up Project

September 21 -22, 2013 and October 12 - 13, 2013

The GLSPS Thomas Wilson Projects are the last two projects of the year.  These projects are a great way to wind down our season of projects.  We have a lot to do in counting the Zebra and Quagga Mussel infestation represented on the shipwreck the "Thomas Wilson".  The location of the shipwreck is 1.5 mile N-NE of the Duluth entrance.  There the shipwreck get much of the flowedge from the harbor thus the St Louis River.  The GLSPS monitors the mussel each year and collects the data and compares the increase or decrease of the mussels

The Thomas Wilson appears to be in an area in which people use it for a garbage dumping ground.  The GLSPS uses this project opportunity to clean up the trash laying around the perimeter of the shipwreck.

2012 Thomas Wilson Project
Hardy Crew

2012 Thomas Wilson Project
Bottom to top - Left to right
Bill Wallace, Ken Merryman, Tim Pranke (Project Leader)
Jack Decker, Paul Imsland, Phil Kerber (Boat Captain)

2011 Thomas Wilson Project
Garbage collected from around the Shipwreck
Left to Right - Phil Kerber, Steve Daniel, Corey Daniel, Todd Olson, Joe Musial, Bill Wallace

Zebra and Quagga Mussels
Found on the Thomas Wilson Shipwreck

To see more pictures of the Thomas Wilson Project, Please click on "Photo Page List" on left side of Website

To learn more about the project, please click on this link. 

The first project is filled up but we still have room for 3 more participants on the second Thomas Wilson Project.  If you are interested in joining us, please click on this link to register for the project.

We hope to see some new (and old) faces joining us for this amazing Project!!

Tim Pranke
Thomas Wilson Project Leader


Closing Report
1st Weekend
September 21 - 22, 2013

The first weekend we crused to the Thomas Wilson and performed the Monitoring on Quagga and Zebra Mussels.  The visablity was only 25 feet and a little harder to navigate.  We use wreck reels for guide lines to navigate around the ship.

This year we tried a few new things.  One is we re-invented the hoop we use to count the mussels.  We devided them both into 4 separate quadrants.  It would make it much easier to  count the mussels since they have increased substantially..

The second process we changed is how we mark the areas that we monitor each year.  This year we marked areas by labeling theareas in which we count the mussels A - L.  This process will help us a lot for keeping track of each area into the future of this project.

We also cleaned up the Garbage that seems to collect around the shipwreck.  We think most of it is flowing down the river and ending up being caught by the fact that a structure is there for the garbage to hang up on.

We completed counting mussels in all the areas we designated.  The results are that we noticed a substantial increase in Quagga Mussels and not so much increase in Zebra mussels.  

Please review the date sheet provide to see for your self how much the invasive species have increased on the Thomas Wilson Shipwreck just 1.5 mile out of the Duluth entrance.  Here is the link to the results of the project on a Data spread sheet.


Thank you to those that participated in the Thomas Wilson Invasive Species Monitoring and Clean up Project.  We hope you dive and join us on next year's project.

Tim Pranke
Thomas Wilson Project Leader

Closing Report
Thomas Wilson Invasive Species Monitoring Project
2nd Project October 12 - 13, 2013

The 2nd Thomas Wilson Project was canceled because of the poor visibility.  The first day Saturday, we were weathered of the lake because of high and building winds.  The next day, Sunday, the surface weather was much better and we departed the dock at Spirit Lake Marina at 7:00 AM in very calm seas.  We cruised the boat and crew out to the dive site, we sent the first dive team down.  Within 5 minutes they returned disappointed that the visibility was only about one foot.  The dive was called at that time.  We returned to the Harbor for a quick tour and then returned to Spirit Lake Marina. 

We had a great run of projects this year.  The RV Preservation perform very well.  The Thomas Wilson Project was the last project of 2013.  We will continue with this project every year to collect data on the invasive species the Zebra and Quaga Mussels.
The boat was schedule for haul out when we returned to the Marina.  Winterization duties will be performed right after the boat is placed in dry dock for the winter layover.

Thank you to those that joined us on the Thomas Wilson Invasive Species Monitoring Project. 

See you next year!

Tim Pranke
Project Leader