Drop sonubuoy key activates hull sonars

The drop sonubuoy key activates hull sonars of ships and submarines also.

Expected: drop sonubuoy should drop buoys and activate dipping sonars only.

Player might accidentally use the key for the wrong group or might want to activate dipping sonars of a/c formation patrols of a mixed group / CVBG. This will erroneously also activate hull sonars of ships and submarines, revealing their locations to enemy sonars.

Load savegame passive.hp9, press the key for CVBG AAC,
hull sonars of the Tico and Spruances are also activated. See drop.hp9.

Note, the Leahy and Belknap stays passive, it seems that only units also with Towed Array sonar are affected.
See towed.hp1, the Type 22/2 and 22/3 of AFC have gone active, the Invincible and the Type 42s stayed passive.