Furuno FCR-2119-BB Operation Manual page 140

3. TARGET TRACKING (TT)
(ALF format: 190,5) "TT MAN ACQ 100%". If the capacity is 100% you cannot acquire
more targets. Cancel tracking of non-threatening targets if you wish to acquire addi-
tional targets manually.
Note 3: When a target being tracked nears another target being tracked, the targets
may be "swapped". When two targets acquired either automatically or manually come
close to each other, one of the two may become a lost target. If this occurs, manual
re-acquisition of the lost target may be necessary after the two have separated.
Note 4: You can reuse a target number. This is useful when you acquire the "wrong"
target. Drag and drop the symbol onto the correct target.
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