Guides
2 articles
Oct 18, 2026// BOAT-HORN
Drawbridge Horn Signals: How to Request a Bridge Opening With a Battery Horn
One prolonged blast plus one short blast is the federal signal to request a drawbridge opening. Here is what 33 CFR 117.15 requires, what...
Jun 17, 2026// BATTERY TRAIN HORN
Train Horn for Boats: Marine Safety Signaling That Never Runs Out
Disposable aerosol boat horns lose pressure, run out after 70–80 blasts, and top out around 126 dB. A rechargeable battery-powered train horn runs off...