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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
November 1, 2021

GLSPS Annual Fundraiser!!

UMSAT Show Website

The Date for the 2022 UMSAT Show!!

April 1, 2, 2022

For more information about the Speaker Lineup and General UMSAT Show, please visit

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

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

We are always looking for speakers that would like to present a great topic about their scuba diving, adventure travel experiences, shipwreck diving and maritime history research and stories.

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

Project Waiver

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

GLSPS Project & UMSAT Show 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


Scuba Center offers free air fills and special pricing on rental equipment while participating in GLSPS projects. Required to show GLSPS Membership Card! 
Thank you, Tom Benson and John Avery!

GLSPS Project and Program Note:

On every Diving Project the GLSPS Requires that you complete 
the Liability Release and Waiver Form 36 to 24 hours
Before you board the RV Preservation Research Vessel.
Here is the link to the form you will need to fill out, sign and submit.

GLSPS Liability Release and Waiver Form 

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News Stories

The Madeira and Hesper Monitoring Project July 28 - 29, 2012

Madeira and Hesper Monitoring Project 

July 27 & 28 2012

The GLSPS sponsored a monitoring project that helps us monitor shipwreck deterioration.  This type of project is presented when we have reports that a particular shipwreck appears to be falling apart more than it was in the previous years.  

The project started Friday night when all participants joined us at the Silver Bay Marina to stay overnight on the boat.  This one one of the greatest experiences of the entire project is to all be together on the boat to talk about the project and the diving we are about to perform the next day.

When we did the Madeira and Hesper Monitoring Project, we collected a lot of data and video to sort through and record.  We will present a detailed report on how they are deteriorating as time goes forward.  The report will eventually find it's way to this section of the GLSPS Website for members to view.  Some of our observations are written below.  Please watch for any additional information as it becomes available on the GLSPS website.

Further details about the project are as follows.

1.  The Hesper dive indicated that the wreck is relatively stable.  Knees and other structure seem to move around very little and as far as the difference between years past and this monitoring project.  We did note that the bilge pump that was put back on the wreck a few years ago was tipped over so we up-righted it to the standing position where it is supposed to be.


Note:  Check out this video of the Hesper filmed by Sarah Korthauer

Madeira Monitoring:

1.  Three dives were performed by two different teams, covering the majority of the wreck.  The pilot house is still standing and deteriorating slowly as noticed last year.  Moving towards the smokestack-- a piece of structure 3-4 feet wide broke off just before the stack.  Appears rivets rusted away and the piece fell over.  Noticed this occurring on the stern port side.  Rivets rusting away, hull plates shifting and rivets popping out.  You can sometimes find the rivets on the lake bottom.  While inside the stern the holes can be observed with the ambient light outside the hull shining thru.  Overall, the wreck hasn't changed significantly.  I want to make some key measurements on the stern section next year to determine if the port side of the hull is gradually collapsing and at what rate.  I enjoy taking new divers on this wreck and showing them parts of the wreck that most don't usually see.

My goal is to get the divers participating in this project more familiar with all of the wreck to give more insight to observed changes.  I also would like to document the mid section better and correct placement of pieces along the hillside.

Thank you again to everyone who participated in the project, everyone's help and input was appreciated.

We hope to see you on the next project.

Corey Daniel
Project Leader
Cell - 218-343-4970