Well, I am getting me a Wyrm, and I'll keep the Tachikaze grounded at New Tokyo unless something big comes up, so there will be a maximum of one (1) gunboat, bomber or vhf actually in use, initially.
Edit: for the record, I would consider, for example, BLS running convoys or coordinated squad-level attacks on New Tokyo or Honshu as 'something big', and bring out the Tachikaze (OR other gunboat/bomber/vhf) to deal with it. Compare to bringing in the SWAT.
Edit2 after reading Nietzck's post: if two gunboats are needed at the same time, I expect to be calling the KNF, actually.
John Johnson - Master of Synth.Foods-Convoy|049
Hans Adler - Synth Foods escort wing