05/19/2026
Day 2 of our National Safe Boating Week spotlight! Weโre back with the UC Davis Boating and Diving Safety team, and today weโre testing your gear knowledge. ๐งโ
Our research teams carry some highly specialized equipment to stay safe in the field. Can you guess what these 4 items do? Click through the photos to see the items, then check your answers below! ๐
๐ฅ 1. Engine Cut-Off Switch (Kill Switch).
Why it matters: The operator attaches this to themselves. If they are accidentally thrown overboard, the engine instantly shuts off. Without it, a runaway boat can circle back and strike the person in the water. Itโs a federal requirement for all vessels under 26 feet!
๐ 2. A Mushroom Anchor.
Why it matters: Unlike other anchors, this one is built for mud and only mud. It sinks in, creates an extreme suction hold, and is perfectly designed for long-term mooring operations.
๐ 3. A Jet Propulsion Lower Unit.
Why it matters: No propellers here! Jet boats are the ultimate tool for shallow river research because they don't get snagged. The water is sucked in and redirected through that metal "clam-shell" cowl to shift the boat between forward, neutral, and reverse.
๐ฆ 4. An SOS Night Signal Device.
Why it matters: Itโs a non-pyrotechnic visual distress signal. Instead of using traditional smoky or fiery flares, this electronic device flashes a powerful, continuous SOS light to summon help safely in the dark.
To learn more about vessel training, scientific diving certifications, or safety protocols, check out the UC Davis Boating Safety Program website: https://buff.ly/rQmh0Rm
๐ธ: Abbey Dias/UC Davis Boating and Diving Safety Program
Image descriptions:
A bright red coiled safety lanyard (engine cut-off switch/kill switch) attached to a boat's control console. The lanyard extends across the side of a small fiberglass vessel resting on a trailer outdoors under a clear sky, illustrating the safety tether used by boat operators.
A weathered, dark cast-iron mushroom anchor resting flat on a light-colored surface. The anchor features a distinct inverted bowl shape at the bottom with a short, thick central shaft ending in a counterweight loop, showing signs of wear from use in soft mud and mooring environments.
A close-up, front-facing view of a gray metal jet propulsion lower unit from a research vessel, resting on a flat surface indoors. The prominent circular intake nozzle is visible in the center, surrounded by its heavy-duty housing, showing the specialized mechanical cowl setup used instead of a traditional propeller for shallow-water operations.
A hand holding an electronic, non-pyrotechnic SOS night signal device indoors. The device features a bright orange cylindrical handle and a clear plastic top housing a high-powered LED distress light, with other marine safety gear and a blue container visible in the blurred background.