We have radar
which has proven useful from time to time...offshore, and inshore when weather
socks in. All things are a compromise. Do you feel comfortable without it? Will the upgrade make your sailing safer? Do you have AIS
( which is likely only useful for commercial
Sorry I really only have questions for you. Answering them will perhaps give you your answer.
If this is something you are likely to use a lot, it may very well be time to replace it.
There are some great packages available now that have chartplotter
, radar and sonar all in one deal. some of them are around the same price
or less than a stand alone unit. Might want to check those out.