HMS Beagle was a built for the Royal Navy (RN) around 1930.
HMS H30 was a British H class submarine built by Vickers Limited, Barrow-in-Furness.
In chemistry, hydronium is the common name for the aqueous cation, the type of oxonium ion produced by protonation of water.
ICD-10 is an international statistical classification used in health care and related industries.
The McCulloch Model MC-4 was an American tandem-rotor helicopter and was the first helicopter developed by McCulloch Aircraft Corporation, a division of McCulloch Motors Corporation.
The Nissan H series of automobile engines is an evolution of the Nissan "R" engine which was based on the 1.5L 3 main "G" used in the 1960s.