"Marc Heusser" d wrote in
message ...
In article ,
"Denis M" wrote:

After this summer cruise I concluded that I needed to replace my radar
reflector.

An active one will work wonders.
And (active) AIS is an even better option, provided you are aware that
only vessels over 500 tons are mandatorily fitted with one. This will
even give you the equivalent of MARPA.

HTH

Marc

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AIS is on my wish list. MARPA works well and I like to talk about this on
another thread.

This summer in heavy fog I would acquire a target with MARPA. Then I would
monitor it.

At time the target speed was 5 knots going to 15 knots and back to 3 knots.
After 15 minutes of monitoring the target would disappear and reappeared
after. The conclusion was that it could have been a whale watching
pneumatic boat. I later checked with some owner of whale watching boats and
they stated very few boat can reach 15 knots. Beside that MARPA has work
wonder for me.