Sorry, but "looked like" is considered evidence. All eye witness accounts are based on "looked like", though this is often overturned since untrained eye witnesses can be notoriously wrong. But "looked like" uttered by an expert can be considered evidence. Fingerprint and DNA matching are rarely, if ever, a 100% fool-proof match. It's an expert who has said..." "Looks like" they're match to me, based on my years of training." that has provided the evidence in court.
And... just of the sake of quibbling, if you could not positively ID something coming straight in at you at 50knots, and not detected until it was 2 miles out, I think your skipper would have appreciated a " "Looks like" something unfriendly" rather than waiting for the positive evidence.
Can I guess that you are an engineer of some sort?
I am not unsympathetic.... really...