Original German WWII Senior Helmsman NCO’s Career Sleeve Insignia

Original German WWII Senior Helmsman NCO’s Career Sleeve Insignia, crossed Anchors positioned over a single chevron. appx. 3 1/2" x 2 3/4" This patch was found in a shoebox from our Dad's estate. We are not experts in this venue and all info was found on the internet It is original and has age on it, but no rips on insignia side, see pictures. Thanks for Reading.