Have 4 Sonars

Protect the Fleet task says, "Have 4 sonars" I had 10 but it says 0/4, perhaps they mean buy 4 sonars? So I buy 4 sonars, it still says 0/4. Ok, so I totally misunderstood, they mean on the boats. So I put a sonar on 4 boats and send them out, but it still says 0/4. Now I am confused, not sure what else they could possibly want. Any ideas, other than rebooting, clearing cache, etc. which has already been done?
DxrxbillingGame @ us 1
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