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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 Linkhttps://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