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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

If we are allowed to have a physical Show
The 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 11:00 PM


If we have a Virtual Show Only
The dates would be

April 6 - 10, 2021

There will be one speaker each night 
starting at 7:00 PM

Saturday will have two speakers and
the GLSPS Awards Event 
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

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

HomeEventsR/V Preservation Work Weekends

Events - Event View

This is the "Event Detail" view, showing all available information for this event. If the event has passed, click the "Event Report" button to read a report and view photos that were uploaded.

R/V Preservation Work Weekends

Saturday, May 6, 2017 to Monday, May 29, 2017
Spirit Lake Marina
121 Spring St.
Duluth, MN  55808

Additional Info:
Kenneth Knutson
2017 Projects
Registration is recommended
Payment In Full In Advance Only
Bring your warm and older clothes or coveralls, safety glasses and respirators. We only have a few respirators left out of all the ones we had. They were getting old and beat up and had to throw them out.
Activities/Items    (Click the down-arrow to the left of the activity/item to view the details)
R/V Preservation Work Weekend #1 Saturday
R/V Preservation Work Weekend #1 Sunday
R/V Preservation Work Weekend #2 Saturday
R/V Preservation Work Weekend #2 Sunday
R/V Preservation Work Weekend #3 Saturday
R/V Preservation Work Weekend #3 Sunday
R/V Preservation Work Weekend #4 Monday (Memorial Day)
R/V Preservation Work Weekend #4 Saturday
R/V Preservation Work Weekend #4 Sunday

2017 R/V Preservation Work Weekends

The summer project season is fast approaching!  We could really use your help in preparing the R/V PRESERVATION for an exciting season of fun and interesting projects. We are working on some still-in-progress items and include a number of improvements for the new season. Please review the "To Do List" and "Dream List" see if there is anything that you could help with. We invite you to join with us and get to know the R/V PRESERVATION and more people in the GLSPS. We'd love to share a weekend of boat-work and camaraderie.  With the R/V PRESERVATION and Phil's camper, we can usually house up to a dozen volunteers at a time!


This event is split into separate activities for each day of each weekend. Please register for each day you are able to attend so we can plan tasks and sleeping arrangements based on the skill-sets and headcount of those attending each day.

Task Status

The task list below will be updated each work weekend (hopefully each day of work). Task progress will be reported in blue font and completed tasks will be marked (Done!) .

R/V Preservation To Do List - As of 5-01-17

Please Note: Tim Pranke is in charge of ALL painting projects on the R/V PRESERVATION !  All painting instructions and procedures must be approved by Tim. Thank You!


  1. Pressure wash entire outside of boat - required each year.  (Launch Weekend)? 
  2. Grind/clean and repaint all pealed/rusted areas - annual process. 
  3. Check the top of the Pres (white roof areas) - completed 2014, verify good coverage. 
  4. Clean interior walls and repaint if needed - annual process.
  5. Inspect rear wall and door. Clean, paint and reseal wall as necessary.  Some rust is showing in corners of rear wall.  Rust  grinding sealing and painting needs to be throughout the season. 
  6. Clean bilge areas in all compartments. These high-moisture areas may need some paint work or primer applied if bare metal areas are noted. 
  7. Inspect and repair mid-ship scupper drain pipes.  Some leakage was noted last season!!!
  8. Clean and paint the rear deck. After paint, re-install the new rubber deck mat (installed last fall).
    • Tim repaired deck supports. We are contemplating some additional changes. We hope to weld them prior to painting.

Mechanical / Electrical

  1. Check the rear fittings on the new hydraulic steering - slight weep at a fitting still noted?  Refill / top off reservoir as needed. 
  2. Change oil on both engine fuel injector pumps - Check all couplings.
  3. Still experience some vibration while under way, our next procedure will be to recheck engine alignment - before and after launch?  (Will check after launch to accommodate flexing of hull)
  4. Look for any oil leaks in the engine room.
  5. New horn has been installed! Mountings/wiring may need to be modified? 
  6. Mount dive ladder to dive platform.
  7. Check to ensure no leakage is occurring around wires to the radar mast?
  8. Chart "Battery Switches" and document to ensure a safe operator procedure to start engines in the event of a discharged battery.  
  9. Check fresh water pump impeller on both engines?

Annual Maintenance - Engine

  1. Change oil on both engines. 
  2. Change diesel fuel filters for both engines and fill with fuel. 
  3. Change oil in both injector pumps. 
  4. Repack all white lithium grease mechanisms on freshwater engine cooling pumps. 
  5. Repack new packing in front shaft of fresh water pumps. 
  6. Rocker arms and push-rods were replaced  (Recheck clearance)?
  7. Engine Hours (2017 Season) after completing above - Port =   ____  Starboard = ____
  8. The Port engine had _ hours put on it in 2016 and the Starboard engine had _ hours put on it. 

Annual Maintenance - Boat

  1. Remove tarp and PVC framing from boat.  (Haul back to Cities and store in PK's Barn.)
  2. Grease both rudder posts. 
  3. Check both main batteries - add water if necessary (distilled water only). 
  4. Install both brass props - brass keys are stored in orange case in head or attached to props. 
  5. Check wiper blades and wiper motor operation. 
  6. Replace drinking water filters and prepare system for season. 
  7. Prepare head system (chemical toilet) for season.
  8. Replace batteries in CO sensor, smoke detectors, bilge heat sensor and digital clocks. 
  9. Inspect all fire extinguishers, flip and roll dry chemical extinguishers to prevent chemical compaction - date and sign tags. 
  10. Inspect and install all safety equipment and check expiration dates for applicable items including: First Aid bag, AED, O2 pack & extra O2 bottle.  First Aid bag gone through, items missing order in put into bag and are ready to go. 
  11. Inspect all distress signal equipment, check expiration dates for applicable items. 
  12. Insert legal paper-work, license, registrations and insurance info in designated areas. 
  13. Install and test all electronics to verify proper function! 
  14. Verify operation of all switches and indicators on the boat console!
  15. New Horn installed.  Verify wiring and operation? 
  16. The (12V DC) auxiliary plug is not working?? 
  17. Clean debris out of all deck drains (scuppers!). 
  18. Inspect engine compartment intake ducting.  Seal slit in pipe on port side. 
  19. Final cleanup - clean and vacuum all carpet prior to leaving final weekend! 

Annual Maintenance - Compressor (this is at Phil Kerber's shop in Corcoran)

  1. Change oil on 5-Hp Honda engine - use AMSOIL 10W-30 synthetic small engine motor oil.
  2. Change oil in Bauer compressor - use human grade synthetic oil.
  3. Remove lines and filter canisters and O2 clean them, repack canisters with new chemicals in both primary and secondary filtering systems.
  4. Check paper air filters at compressor and at air intake on radar mast. 
  5. Please Note:  Make sure Primary filter has "NEW" O-rings on both cap ends
  6. Check belts.
  7. Check all hoses for wear and any damage. 
  8. Check CO monitor to see if still showing pink (Pink = ok)  
  9. Check all bleed drain valves. 
  10. Clean any debris and dust form external parts of the compressor. 
  11. Install wet muffler for scuba compressor - can be installed with the compressor! 
  12. The Scuba Compressor has ___ hours (2016) on it  (2015 we used it for 121 hours).

Dream List/Projects

  1. Install rear roof to transom tarp.
    • Steve Daniel and Tom Peterson are still working on this???
  2. Design and build compressor containment for permanent outside mount.
    • Researching?
  3. Fresh water heater installed - need to invert switch, occasional accidental "ON"! 
  4. Do we need to Install a second cabin heater. Water lines to engine - 12V to switch???    
  5. Design and install deck anchor roller and latch mechanism.
  6. Install USB Power Charging Stations donated by Jack Decker!!   
  7. Install high temp alarm on both engines?  Researching!
  8. Water flow indicator for compressor wet exhaust?  Researching!
  9. Check all sacrificial anodes & replace as necessary - swap any zinc anodes with aluminum (note: rudders and heat exchangers are currently protected by zinc anodes! )
  10. Register MMSI Number with the Coast Guard. - Distress GPS Coordinates option on the Marine Radio.  Need to register through Boats US / West Marine. Here is the link.!
  11. Purchase an EPIRB?  If it is within the budget?
  12. Purchase and Install New depth sounder / sonar.  Looking for donations to purchase or have a unit donated.

Liability Waiver

The GLSPS requires participant to print, read and sign the Master Liability Release and Waiver Forms for all projects. Please click the link below to print your copy to give to the project or event leader (Thank You).

GLSPS Master Liability Waivers - Medical Forms

Please join us for this rewarding time of working with GLSPS Members on one (or more) of the work weekends. Let's get the R/V Preservation ready for an exciting season of dive projects.
Hope you can JOIN IN THE FUN!

Ken Knutson
Boat Chairman
Senior Captain