Speaking for myself I think it is post war, I will say this! I have no idea what the exact date this photo was given to my Grandmother, it was early 50's, I cannot say the photo was given at the time my Father last visited which was in or around 53 or 54, this photo may have been in my Mother's possession prior to that. All I can say is that it is very old and was stored in a trunk as was most old pictures of that day. The boat does have mooring damage on the bow so it wasn't a spanky brand new boat when this photo was taken.
I should also take a moment to tell this, my Grandmother like a lot of other women did her part in world war 2 by working as a welder building Tanks and later actually welded Liberty ships in Galveston Texas. I remember her telling me about the inspector at Galveston and how fat he was! she said he was so big he could not crawl into the tight small hole areas to inspect the welds.....
Glad he didn't work for the sub builders