A newspaper clipping from the Seattle Post-Intelligencer describing the festivities of K-4's launch from the Seattle Construction & Drydock Company (formerly the Moran Company) yards, March 19, 1914.
From the Seattle Post Intelligencer Newspaper March 15, 1914.
A nice photo of K-4 at idle in 1916. The location of this photo is not known for sure, but based on the mountainous background we suspect that it is Pearl Harbor, Hawaii while the K-4 was operating out of that base in 1915-1917. The large amount of lumber on the pier could be from the ongoing construction at the Hawaii base, which in those years was still in its infancy. This is a long pier, and it could very well be 1010 dock along the main channel in the harbor.