Photo an employee of a private shipping companies (?)

Judging by the lack on the cap badges shown in the photo does not have class rank. Summer uniform jacket of this type, the so-called "American" cut, usually a light blue color, in the early twentieth century were worn in the military and the merchant Navy, and also by employees of private shipping companies and marinas. The button can be considered the anchor, edging on the cap, light green or light blue color, which does not contradict our version. The picture of the valve at the top, unfortunately unreadable, but the lack of participation of the State emblem shows that the character is not in the public service, and serving in a private company. Postcard format. Reverse side lined.