Over the past few years all navigable waterways have experienced an increase in the number of users competing for access, but none more so than in coastal areas. Deep draft vessels have grown in size and number of transits; the inshore fishing fleet continues to be strong; confidence in our economy has prompted more people to purchase recreational craft, especially personal watercraft, and, more recently, there has been an increase in the number of high-speed ferries.
With the advent of improved radar technology and collision avoidance systems, mariners have increased their reliance on radar for navigation, especially when navigating in restricted visibility conditions. Radar is an effective navigational tool; however, for this technology to work effectively, a strong, repeatable radar return is required. Small vessels, especially those with non-metallic hulls, often go undetected on radar because of the weak radar returns they produce. A strong radar signature is vital for these vessels to reduce the risk of collision in low visibility conditions.
The most reliable way to ensure a strong radar signature is to provide flat metal surfaces well above the waterline, facing all directions. The easiest solution is to install a commercially available radar reflector at the highest point possible on the vessel. Although not a panacea because of their limited effectiveness, radar reflectors are highly recommended for all vessels of wood or fiberglass construction. They are readily available at marine supply stores and are relatively inexpensive. Radar reflectors come in many shapes and sizes and also have varying levels of effectiveness, so take some time to evaluate which one would be best suited for your particular vessel and boating environment.
