File:Interior drawing S-class boats.jpg

Summary
Interior plan of S-1 built in 1917-18 launched as SS-105. This inboard profile shows E.B.'s S-1 (SS-105) as designed; it was designed from the boat's contracts plans, dated February 1917. Note the gun access hatch (arrowed) forward of the conning tower. When a big 4-in/50 gun replaced the small 3-in/23 shown, the access hatch had to be abondoned in favor of a smaller ammunition-passing scuttle. Dashed arrows indicate the usual three ventilators grouped around the conning tower fairwater. Batteries are shaded for clarity. Drawing pre 1923 therefore public domain.