Here, an AUV sonar scan runs parallel with the long axis of the vessel researchers believe is that of wooden bulk carrier Ohio. Two upright masts are easily seen fore and aft, while a third collapsed mast can be seen via its shadow amidships. Likewise, the acoustic shadow of the pilot house forward reveals a textbook bulk carrier design feature. Source: Michigan Technological University/Thunder Bay National Marine Sanctuary.

Here, an AUV sonar scan runs parallel with the long axis of the vessel researchers believe is that of wooden bulk carrier Ohio. Two upright masts are easily seen fore and aft, while a third collapsed mast can be seen via its shadow amidships. Likewise, the acoustic shadow of the pilot house forward reveals a textbook bulk carrier design feature. Image courtesy of Michigan Technological University/Thunder Bay National Marine Sanctuary. Download larger image (jpg, 1.9 MB)

 

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