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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

Date and Venue for 2020 UMSAT Show!!

April 3 - 4, 2020


Fred Stonehouse

Maritime Historian and Superb Story Teller

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

For more information on the 2019 UMSAT show, and the upcoming 2020 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

2020 UMSAT Show Exhibitors Contract

UMSAT Show 2020 Exhibitors Sponsors Registration Form

  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

Jay Hanson from North Shore Scenic Cruises has helped the GLSPS on many projects. Jay has many years of experience as a Captain, dive shop owner, dive instructor and commercial diver.

Jay has taken a different path for the past few years and his scuba charters are no longer available. However, in 2012, Jay purchased the Wenonah which was previously used to transport people from Grand Portage, MN to Isle Royale, MI. He now offers day cruises on the North Shore of Lake Superior and is docked at the Silver Bay, MN Marina.

For the last two years the Wenonah has been laid up in dry dock to replace the entire steel bottom of the boat in order to pass the Coast Guard Safety Inspection. 
The Wenonah will hopefully be ready for service in 2020.

If you are interested in booking a 2 hour - day charter cruise on the North Shore of Lake Superior, please click on the logo above for information on joining him and his staff on a north shore day cruise.

HomeMadeira / Hesper Monitoring Project 2018

Madeira and Hesper Monitoring Project 2018

July 21 - 22, 2018





2017 Madeira / Hesper Monitoring Project Photos

Please join us for an adventure Diving the shipwrecks along the North Shore to help Monitor them for deterioration

During this project we are going to monitor the conditions of each shipwreck through visual observation drawings and also using both still and video photography.  


The Madeira and Hesper have been underwater for a very long time.  Mother nature has done a great job preserving them but she has beaten them up along the way.  As divers we dive these shipwrecks and will eventually cause wear from diving them year after year.

This is were volunteers from the GLSPS step in to help.  With the joint effort of the Minnesota Historical Society (MHS) and the Department of Natural Resources (DNR) the GLSPS tries to help stabilize and preserve these shipwrecks from further deterioration.  We work closely with the state organizations and near by Cities near the shipwrecks, to gain access through special permitting to perform the underwater work we perform to preserve the shipwrecks and ultimately maritime history.

Before we can do any of this, we need to document and monitor each shipwrecks deterioration characteristics.  If the shipwreck looks like it's in danger of collapsing or is becoming a safety concern for divers, we formulate a preservation and stabilization plan and present it to the GLSPS Board of Directors.  If the Board and MHS approve the plan, we go to work and implement the plan.  We will also need to obtain permits from the MHS (and sometimes the DNR) to perform construction work on the shipwreck.  If we complete the process like planned, it will help to preserve the shipwreck for many years.  The shipwreck will be intact for future divers to be able to view, just like we saw when we first dived the shipwreck.


Here is your chance to dive the Madeira and Hesper aboard the R/V Preservation and have a great time learning the process of our research as well!

Corey Daniel
Project Leader

Closing Report

July 21 - 22, 2018

   Lake Superior was kind this year during the Madeira/Hesper Monitoring project weekend in July.  The project group enjoyed fairly calm water and plenty of sunshine.  Wheeling the "Preservation" Saturday morning to the wreck of the Madeira was Tim Pranke, joined by myself(project leader), my dad, Steve Daniel, Jim Christenson and his friend and archeologist Mandy Peterson.  This was the first time Mandy has participated on a GLSPS project or cruised on the "Preservation".  Tim brought an extra dry suit for Mandy, who's diving experience was mainly in warm water.  She was ready to dive a shipwreck in Lake Superior.  Unfortunately the suit did not seal up well for her, but not before she had the chance to see some of "Madeira".  A short dive perhaps but I think Mandy will be back for more.  We dove in pairs with Mandy helping on deck.  Dad and I took some measurements from a stake I had installed last year to the pilot house and to the smoke stack.  After comparing the measurements to last year's numbers it appears nothing has moved.  We enjoyed viewing most of the wreck, from the stern to the pilot house then proceeding to the smoke stack and then over to the bath tub.  Along the hillside to the stern swim thru and on to the bow and back again.  There is a large piece of metal hanging in the stern swim thru towards the cliff that has dropped considerably since last year.  It is more obvious and I feel less of a threat to divers.  It appears more rivets are popping out of the hull plating on the stern section, starboard side.  A possible preservation project could be replacing the missing rivets with bolts to slow the process of collapse.  The stern is showing signs of shifting in different places.  I think certain areas will have to be focused on and better documented each year to determine how much change is occurring. 

   Once everyone got their fill of this amazing wreck for the day the "Preservation" headed back to Silver Bay, but not before taking a spin by Split Rock Lighthouse.  After securing the dock lines and stowing gear the group headed into town to enjoy a good dinner and swap stories.

   Sunday came along and again the weather was decent.  One long dive was enjoyed by everyone.  Dad and I stuck to the wreck, starting with the rudder and swimming back and forth on opposing edges of the large pieces.  I am always looking to catch site of something new.  The "Hesper" really doesn't change much from year to year, but I always enjoy diving this wreck to checkout old ship building techniques.  Tim  and Jimmy ventured East of the wreck and spotted a couple of life boat davits and some other wreckage debris.  The "Hesper" is intact and I believe it will remain that way for divers to enjoy for many more years. 

   The weekend was wrapped up with lunch and a good dose of housekeeping for the "Pres".  Thank you to everyone who participated on this project, bringing their individual skills, experience, knowledge and insight:  Tim Pranke, Steve Daniel, Jim Christenson, and Mandy Peterson.  I look forward to diving with you again.


Corey Daniel
Project Leader