Monthly Archives: July 2015

Sonar – How Does it Work? What Does it Reveal?

KleinSonar

What is side scan sonar? And how does it help find shipwrecks?

SONAR (Sound Navigation And Ranging) refers to the use of underwater sound waves to detect objects. Typically towed behind a ship, a sonar unit sends out sound waves and records the strength of the returning echo. Rocks, obstructions and man-made objects stand out from the surrounding seabed, as their smooth or irregular shapes typically reflect sound more easily than the ocean bottom and any object rising from the ocean floor will create a “shadow” behind it, further clues to the shape and size.

Stage 1 of Connaught Mission Complete!

IMG_0049

Endurance Exploration Group is pleased to announce that Stage 1 of our summer 2015 survey and recovery mission to steamship Connaught has been successfully completed! Our ship is now back at dock to swap out gear and personnel for the next stage.

What have we done so far? It’s been a busy few weeks of mobilization and offshore work for Endurance. Our crew first re-established the exact location of the wreck site and associated debris field using data collected from our 2013 and 2014 expeditions. Next, we surveyed the site with 500 kHz high-resolution side scan sonar from multiple angles to map the shipwreck hull and debris field. Finally, we deployed a three-point anchor mooring system. This meant dropping three 2,000lb anchors, 2,000lbs of anchor chain and 4000ft of heavy-duty wire rope, a system that will keep us on station regardless of wind and tide.

Project Connaught Q&A

hi-res-1Interested in learning more about Endurance Exploration Group’s expedition to the steamship Connaught? Check out our Q&A below!

What’s the story of the steamship Connaught? What is the history and how did she become a shipwreck?

Launched in 1860, the Connaught was a steam‐powered packet ship, part of a fast and indispensable transatlantic mail and passenger link between Britain and the United States. Large for her time, she was a side‐wheel steamer constructed almost entirely of iron.