The function of the IWAS unit is to monitor wind speed with safety indicators whilst vessels are anchored at a quayside. If the wind speed increases over a specified adjustable marker, the IWAS unit alerts the operator with a series of visual and audible alarms. In addition, the IWAS system can also perform an operational auto-shutdown of specified plant and machinery. The unit will then continue to monitor wind levels and maintain shut down until the wind level drops below another adjustable hysteresis marker. The resulting use of IWAS importantly acts to avoid accidental injury to crew, vessel and quayside damage. It also avoids any environmental damage from oil spills caused by wind conditions that create extreme sea swells.