Thursday, January 29, 2015
19th CENTURY CANAL BOATS FOUND ON BOTTOM OF LAKE ONTARIO
Two 19th century canal boats were recently found on the bottom of Lake Ontario 200’ down. A dive team from Rochester discovered the boats using side-scan sonar searching for shipwrecks on Lake Ontario’s eastern end. The sunken canal boats 65’ & 78’ were found within a few miles of each other midway between Oswego and Sackets Harbor. They were likely under tow being used as barges and had to be cut loose in a storm.
Thursday, January 15, 2015
WHAT BIG WAVES DO TO A SHIP
Here is an interesting video that shows how flexible the big cargo ships must be to survive big seas. Metal tests have shown that the steel from older vessels (like the Titantic) was of very poor quality and was rather brittle, with many tiny empty pockets in the metal due to the smelting processes of the time. Modern steel can flex a great deal without compromise. Older ships had the hull plates riveted and the rivets were also a weak link and could pop when stressed. Modern steel ships have the plates welded of course and the welds are often stronger than the hull steel itself. In the video you will get an inside view of the flexing. Big ships still want to avoid really bad storms whenever possible because there are limits to any vessel when it comes to flexing of the hull.