The SS Alpena approaches 100th Street outbound on the Calumet River.
| Time and Date: 10:35 AM, Saturday, November 24, 2012 | |
| Chicago, Cook County, Illinois | |
| Approximate Latitude: 41° 42′ 42″ N (41.71186° ) | |
| Approximate Longitude: 87° 32′ 33″ W (-87.54265° ) | |
| Vessel Name: ALPENA | Owner/Operator: AMERICAN TRANSPORT LEASING INC |
| Official Number: 241856 | IMO: 5206362 |
| Service: Freight Ship | Call Sign: WAV4647 |
| Flag: US | Hailing Port: CLEVELAND OH |
| Builder: GREAT LAKES ENGINEERING | Builder City, Year Built: RIVER ROUGE MI, 1942 |
| Propulsion: Steam Turbine | Horsepower: 4000 |
| Gross Tons: 8018 | Net Tons: 5452 |
| Length x Breadth: 503.3 x 67 | Depth: 30.3 (feet) |
| Camera Make: Canon | Camera Model: Canon EOS 60D |
| Shutter: 1/400 | Aperture: 10.0 |
| ISO: 320 | Focal Length: 75 mm; FOV: 17.4 deg |
| White Balance: Cloudy | Lens Type: Canon EF 28-135mm f/3.5-5.6 I |
| Exposure Mode: Manual | Focus Mode: AI Focus AF |
