Well, point defence weapons or even just the ships normal armaments might be able to pick them off before they hit or could be effective.
Since your ships are so small, how large would the nukes be then?
Anowa wrote:The World Capitalist Confederation wrote:Also, believe it or not, based on the numbers, kinetic weapons are more energetic than energy weapons powered by antimatter. Even antimatter is worse than kinetic weapons at doling out force.
Penetrating the hull of a Spaceship at the sizes we're dealing with is hardly optimal. Even wet navy ships have sealable compartments to prevent sinking. In space this is even more negligible because there's no drag caused from a weight differential.
Putting holes in a spaceship isn't gonna kill it. Only thing that's gonna kill it is a reactor detonation or superheating the hull. The latter of which kinetic weapons lack the capacity to do efficiently.
Also if your ships are close enough where things like ranging isn't necessary, you're close enough for boarding and being laid to waste by smaller. More maneuverable ships. The IRL Battle off Samar is an example of this.
Pulsed laser/plasma weapons can do quite a number superheating the hull wise, since each subsequent hit heat the material more than the one before it and all that.
Not saying Kinetic weapons would be meaningless, but the force of a projectile could be dispersed majorly by say laser Point defense vaporizing it/turning it into a cloud of slag. Would that deal no damage, no, but still significantly less than should the projectile itself hit, which again could be mitigated or dealt with in some way.