I agree with you I think there was a lot of boat to boat, and I looked at the Barb very closely and the one photo of her refitting at Mare in 45 they purposely circled that rectangular vert hole amidships in their official photo. I spoke of this in one of the earlier post I made, I have not seen that on any of the GATOs except the one above. That would explain that mystery, also I see in the same photo that they have installed a gun mount on the forward smoking deck.
That photo may be right there in Frisco Bay or near without the gun mounts. If it does turn out to be the boat I guess I'll have to try and give the photo to the proper organization so the photo list can be added to. I certainly hope the service records shed some light on the other photos taken on the Cobia. I couldn't see the large dent on the starboard side hull Bow area on the black and whites of the Barb , they were taken too far away.
Got to go to bed, thanks for all the help.