Good eNewsletter from Ocean Navigator in which the author describes a near collision situation and how he responded to it, using both technology and common sense… He points out how one device, an active radar reflector, could have been very helpful.
“Sea-me is an active radar reflector. When struck by a radar beam, Sea-me amplifies and reflects the amplified signal back to the sending unit. The amplified signal makes the target appear much larger. The reflected signal has an average radar cross section of 34 square meters, and I know vessels using this device often appear like a ship on radar. This device also has a radar detector, which alerts you to an active radar system in the area (similar to the CARD, though CARD does have a directional display).”