Note:
(a) USS William P Lawrence https://en.wikipedia.org/wiki/USS_William_P._Lawrence
(DDG-110 [hence the number on the hill); is named for Vice Admiral William P Lawrence (1930–2005), a naval aviator; commissioned 2011; homeport Peal Harbor)
(b) USS Stethem https://en.wikipedia.org/wiki/USS_Stethem
(DDG 63; commissioned 1995; homeport Yokosuka, Japan; is named for Steelworker 2nd Class Robert Stethem, who was a Navy sailor killed by terrorists onboard TWA 847 in Beirut, Lebanon in 1985)
(c) automatic identification system https://en.wikipedia.org/wiki/Automatic_identification_system
(AIS; uses transponders on ships; AIS information supplements marine radar, which continues to be the primary method of collision avoidance for water transport)
(d) Google "APP Marine Traffic," and you will see
Marine Traffic App https://www.marinetraffic.com/mobile-apps
. which is just an app (called Marine Traffic) without saying whho or what company makes it.
(2) 涂鉅旻, 180艘美艦開啟AIS 國防院︰傳遞戰略透明訊號. Liberty Times, May 1, 2019. https://news.ltn.com.tw/news/politics/paper/1285419
("美國兩艘伯克級神盾驅逐艦四月廿八日在台海現蹤，其中「史塔森號」驅逐艦更開啟船舶自動辨識系統（ＡＩＳ）公開航跡，引發各界注意。對此，國防安全研究院資源與產業研究所長蘇紫雲指出，根據他觀察，美軍近期有一百八十艘軍艦在全球各地開啟ＡＩＳ，可見美軍已將「戰略透明」作為重要訊號傳遞。")