TZ Blogs May 31, 2013 Timezone Feature
Zenith’s new Pilot Type 20 is a fabulous piece which doesn’t look too big on the wrist.
What is ironic is that they call this the Pilot’s watch, when in fact the only military customers for it were the Royal Navy, who used it as a deck watch for navigational timing.
The broadarrow on the rear of the case & on the dial mean that it is UK Govt. property; and HS3 means that it is a deck watch & it has been timed by the Hydrographic Survey (the branch of the Royal Navy responsible for maritime charts & navigation).