Work shirt (smock): undyed cotton or bram cloth; colored field gray from 1916; Lead buttons
Work trousers: see above (Wearing style could also be mixed, e.g. light pants and field gray shirt)
Shoes: black leather
Sailor hat: blue cloth; cockade black / white / red; Black silk hat band with appropriate lettering (e.g....
II. MARINE SEEFLIEGER ABTL. II.
printed in gold)