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Database Information Shipwreck Unidentified Green Bay Sloop
Basic Information
Name(s) Unidentified Green Bay Sloop
Registry US
Official Number
Vessel Type Sloop
Builder
Year Built circa 1700’s to 1800’s
Year Sank
Hull Material Wood
Engines None
Dimensions
Length 39.0 ft (measured)
Width 11.6 ft
Depth ft
Vessel History
Complete Historic Information Link – https://wisconsinshipwrecks.org/Vessel/Details/725?region=Index
Wreck Site Information
Lake Michigan
State or Province Wisconsin
Depth Undisclosed
GPS Coordinates Undisclosed
Site Description The mostly intact hull of the sloop sits upright and partially buried in the bottom with a 38 ft mast still standing. The trestletrees and a crosstree on the mast are visible. Most of the deck is gone but an anchor windlass still sits on the deck. The port cathead is still extant on site but no anchor is visible. There is one cargo hatch and a deck opening aft that appears to be where a recessed cabin sat. There is a large curved tiller and rudder extant. There are two heavy structural beams protruding from the transom which have been interpreted as potentially as a part of a stern castle but the opening in the aft deck would seem to contradict that along with the height of the tiller, which one would assume would need to reach the top of the cabin. One candidate for the identity of the wreck is Etta, a sloop that sank in the area in 1856.
Model Information
Photographer
Photographer(s) Andrew Goodman, Tamara Thomsen
Year Captured May 2026
Time it took to capture 40 min
Modeler Information
Modeler Ken Merryman
Date Completed 12-2025
Hours of input to complete 6 hrs
Technical Information
Photography
Camera – Canon 5d Mark IV in a Nauticam Housing with an 8” Dome Port
Lens – Canon EF Zoom 8-15mm set at 15 mm
Multi-Camera Rig – No
Camera Propulsion – DPV
Video or Stills – Stills
Number of images Submitted – 1,942
Image resolution (pixels) 6720 x4480
Lighting – Artificial & Natural
Number of lights – 4
Light Output Lumens 4×10,000
Model Information
Software Used Agisoft Metashape Professional Version 2.2.1 Build 20641
Data Format .jpg converted from RAW
Number of Source Images used – 1,913
Are these images original or adjusted; Adjusted
If Scale Bars, calibration length – 3.0 ft
Portion of the site covered: Complete
Publishing Restrictions
Licensing Usage Restrictions CC BY-ND
Attributed to: Andrew Goodman and Tamara Thomsen of 3DShipwrecks.org
Resource Data in Database
Model Yes
Source Images Yes
Source CC .jpg
Number of Still Images 1,942
Video Clip None
Processing Report Yes
Camera Calibration .xml Yes