This Hummingbird unit is all about informing you of everything surrounding your boat trip.
C MAP CHARTS AT WEST MARINE MANUAL
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Use extra caution when boating on a low tide. The greatest range of tides (shallowest and deepest water) occurs during a full moon and new moon. Sand-covered bottoms appear white and may or may not be deep enough for your vessel to navigate. Shallow water appears dark (brown) to the observer, while deeper water appears blue or green. Wear polarized sunglasses to help you "read" the water.Always pay attention to signs, markers, navigational aids, and information buoys, which may indicate shallow areas closed to motorized vessels and/or provide user information for that area.Know the draft of your boat and how much water you need to operate safely. Use marked channels where they exist and stay in deeper water where your propellers and hull won't damage shallow-water habitats.PLBs function like EPIRBs, but are smaller and can be worn on clothes or a life jacket. A personal locator beacon (PLB) is also recommended. This device, when activated, sends a distress signal to a satellite, helping rescue crews pinpoint a person's exact location in the event of an emergency. Purchase and register an Emergency Position Indicating Radio Beacon (EPIRB).Life jackets can greatly increase chances of survival at sea. Make sure you have enough life jackets for all on board, including children.Always use up-to-date nautical charts of the area.
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Familiarize yourself with the local waters where you plan to boat.If weather conditions do not look favorable in the area, or at the destination, consider altering your plans until conditions improve. Visit /key to obtain the latest marine weather conditions, forecasts, and possible warnings or advisories.