by Pete in Holland MI » February 7, 2019, 7:37 am
Regarding distance heard, the information I have for the steam Tyfon horns common on steamers after costly-to-run whistles were replaced, indicates that a 300 series horn was advertised to be heard 6-8 miles at sea, and the 425 at 7-9 miles at sea. The 575 horn, at least 10 miles at sea. There were a lot of 300 series horns on freighters, a few had 425's. There were no 575's on the Great Lakes that I was aware of.
On the Great Lakes, most horns these days are either air, or electrically driven. There are still a few steam horns in operation. There are no steam whistles in service anymore.
Pete
Regarding distance heard, the information I have for the steam Tyfon horns common on steamers after costly-to-run whistles were replaced, indicates that a 300 series horn was advertised to be heard 6-8 miles at sea, and the 425 at 7-9 miles at sea. The 575 horn, at least 10 miles at sea. There were a lot of 300 series horns on freighters, a few had 425's. There were no 575's on the Great Lakes that I was aware of.
On the Great Lakes, most horns these days are either air, or electrically driven. There are still a few steam horns in operation. There are no steam whistles in service anymore.
Pete