For echo sounders, the distance actually traveled is two times the distance to the seafloor from the source. transducer (from the transmission source, to the bottom and back again). This results in a significant. source of signal loss for the system receiving the sound pulse, which must be compensated for at the.
Average Weather in Hilton Head Island South Carolina, United States. In Hilton Head Island, the summers are hot and oppressive, the winters are cold and windy, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 42Â°F to 89Â°F and is rarely below 30Â°F or above 95Â°F.
1 The cost of living in Hilton Head Island is 46.8 % greater than the South Carolina average. 2  The cost of living in Hilton Head Island is 38.9 % greater than the national average. 3  Each cost of living index is based on a national average of 100. The price of coffee in Hilton Head Island, SC is $4.59. 2  The price of coffee in Hilton Head Island is 2.2% higher than the national average. 3  Honolulu, HI is the most expensive city for coffee at $7.79.