The Victorinox Seaman (model 0.8030.20) is the thinnest of the Alox knives intended for marine use.
It's a single layer 93mm red alox knife that was produced (according to SAKWiki.com) between 1986-1995. Mine knife somewhat unexpectedly has a 85 manufacturing date stamp on the reverse tang! It has a large blade and a Marlinspike, that is useful for untying knots and splicing rope.
It is rare and highly collectible.