Matches in DBpedia 2016-04 for { ?s ?p "Communication with submarines is difficult because radio waves do not travel well through good electrical conductors like salt water.The obvious solution is to surface and raise an antenna above the sea level, then use ordinary radio transmissions. However, a submarine is most vulnerable when on the surface. Early submarines mostly travelled on the surface, diving mainly to evade immediate threats because of their limited underwater speed and endurance."@en }
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- Communication_with_submarines comment "Communication with submarines is difficult because radio waves do not travel well through good electrical conductors like salt water.The obvious solution is to surface and raise an antenna above the sea level, then use ordinary radio transmissions. However, a submarine is most vulnerable when on the surface. Early submarines mostly travelled on the surface, diving mainly to evade immediate threats because of their limited underwater speed and endurance.".
- Q2379628 comment "Communication with submarines is difficult because radio waves do not travel well through good electrical conductors like salt water.The obvious solution is to surface and raise an antenna above the sea level, then use ordinary radio transmissions. However, a submarine is most vulnerable when on the surface. Early submarines mostly travelled on the surface, diving mainly to evade immediate threats because of their limited underwater speed and endurance.".