Ukraine Military Tactics (what happen Moska russia vessel attack )

 Because if they had fired into the 180 degrees of active detail radar coverage, they would have been shot down. (It took a Bayraktar to draw the Moskva into position so they could fire into the other 180 degrees).

Because if there had not been appropriate cover of weather, setting up the Neptunes to fire would have been observed— and probably resulted in strikes on their positions, destroying the missiles and personnel.

Because staying low enough to hide the Neptunes just above the waves, etc, required other special weather conditions.