File:US Navy 031015-N-9214D-014 Signalman 3rd Class Jeff Allen uses a signal light to communicate with other ships in the vicinity during missile firing exercises off the coast of Southern California.jpg - Wikimedia
British Royal Navy Searchlight and Signal Light – Lannan Gallery
Rayen Signal And Search Light (merchant navy) | Vintage And Prestige
Antique Navy Ship Signal Light | Glitter room, Lamp light, Light
Blinker Tube
File:US Navy 090708-N-3925A-001 Quartermaster 1st Class Samir Patel uses a signal light to communicate during an underway replenishment aboard the amphibious transport dock ship USS Cleveland (LPD 7).jpg - Wikimedia Commons
British Royal Navy Searchlight and Signal Light – Lannan Gallery
Signal lamp - Wikipedia
bookofjoe: 1945 WWll U.S. Navy Morse Code Signal Light