But it’s not really true. Switzerland has no naval branch of its armed forces.
It has a dozen or so of 10t patrol boats armed with a single 50cal MG for its lakes, and those are organized in a single motor boat company, which is staffed and manned by the military engineers branch.
Their duties are supporting the border guard (police) on the lakes against trespass/ smugglers and assisting (civilian) search& rescue.
Inherited a Hilti Hammer drill from my dad that was used for basically everything in construction and demolition he ever did since before I was born - around 4 decades ago. It was and is the tool he and now me always go to when cheaper drills can’t deal with the problem. Be it hammering through super massive concrete walls or enduring hours-long destruction sessions, it just does the job.
Nowadays it looks like a utter piece of junk that got tumble dried with rocks, but it’s as reliable as on day one.