The Vulture Prime is very effective as probably the hardest to kill missile boat. It's got decent armor and maneuverability, GECM, and a reload for each of its LRM20's. Try to rush it in a Light or Medium mech and you'll get shredded by the pulse lasers. Fairly decent capabilities in that regard, but personally, I don't care for it.
Totally agree with snowball again, for the upteen-thousand time.
Vulture Prime is the best Missile platform when there is a coordinated team providing NARC.
You've got 960 LRM missiles, 360 degree twist (so you can keep circling to avoid LT and aircraft), and when some Scat or other brawler decides that missile boats need to be eaten, you've got tons more armor and can slaughter light and medium mechs with all those pulse lasers. God help them if they dont pick you first. GECM helps greatly to protect against all attackers.
Quite frankly, late game, when Novacats, Mad cats, Atlases, Maulers, etc. are being fielded, constant LRM spam will eat them alive. No heavy or assault mech should make it to the front line without atleast a yellow torso.
With proper Teamspeak coordination, a vulture prime sends 4 volleys (160 missiles) towards each NARC.