Model Engineer Index 1898 to Feb 2025

Year 1956
Date 26-Jul
Volume 115
Issue 2,879
Page 124
Category Nautical
Part
Title Modern Navigational Aids. The Echo Sounder
Author A Cecil Hampshire
Notes The Subsig type No. 101 recorder, Kelvin Hughes Kingfisher echo sounder, tremendous amplification, Kelvin Hughes Fishmaster, sound beamed downwards