I was thinking about gunboat with advanced SLAM, OS-1 configuration and cluster missiles. After SLAM, gunboat performs red target lock action and receives disabled weapons token. Thanks to OS-1 arsenal loadout, it still can fire missiles against locked target. So, it fires cluster missiles.

However, may I perform the second attack granted by cluster missiles? OS-1 configuration says, that you may perform attack with torpedo and missile secondary weapons against ships you have locked even while you have a weapons disabled token. Cluster missiles says: after this attack, you may perform this attack against a different target at range 0-1 of the defender, ignoring the [lock] requirement.

So, am I able to perform that second attack, or maybe weapons disabled token forbids me to do that?

No. The Cluster Missile bonus attack ignores the [lock] symbol it has, but it doesn't allow you to ignore the OS1 restriction.

That makes me a sad panda.