95 years after disappearance, the USS Conestoga is found

Sometimes a misread contains more truth than one would like :D

What also surprised me is that from 1858 to 1907 there were 5 wrecks in that area. I wonder what the reasoning is?

Some MH370 debris has appaently washed up in Mozambique: http://www.bloomberg.com/news/articles/2016-03-24/debris-fou...

Did they publish the exact location of the wreck? Where's the original NOAA reports from the 2009 survey or 2014 dive?

Well radio was certainly available at the time this ship went down, however if the article suggestions are correct then waves may have crashed through the wheelhouse and that likely would have flooded out the radio room as well if not just the general mayhem of the rough seas. they could have simply engulfed, as in to go bow into a big wave and never come back out.

I cannot find information the directly states what type of radio it may have had

It's not unheard of for ships to be overwhelmed by heavy seas. Here's an accident investigation report into the loss of a large freezer trawler in storm in the Barents Sea. The ship was thought to have lost steering, went beam on to the seas and was overwhelmed due to an incorrectly secured hatch. https://www.gov.uk/maib-reports/sinking-of-stern-trawler-gau...

I have no idea why they didn't send a distress message, but how accurately would they know their position in a storm in 1921?

Yes yes, congratulations on having an old country.