The measurement of radiated noise from ships has historically been undertaken for military purposes using fixed noise ranges.
More recently, researchers from both military (e.g. Wales and Heitmeyer (2002) and Scrimger and Heitmeyer (1991)) and civilian (e.g. McKenna et al. (2012), Merchant et al. (2014) and Hallett (2004)) backgrounds have used short or long term mobile deployed systems to measure shipping noise.