The Intelliboat Ladder Sensor automatically alerts you when the boarding ladder is in the water.

The compact, waterproof, easy-to-install system is wireless and gives audio and visual alarms when the engine ignition key is turned, reminding you to bring the ladder aboard before getting underway. The manufacturer says it won’t interfere with engine operation or on-board electronics. $119.99. RaptorTek, Miami, (321) 345-6202. intelliboat.com

This article originally appeared in the July 2016 issue.