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Starship weapons systems should be links to separate articles so you can use the same weapon for multiple ships...I thought we had articles for these weapons already. I could be mistaken though.
According to the size guidelines for starships, the Zahl ought to be considered a destroyer. That also fits with the small crew size. This would give it 20 SP (like the Plumeria, which is significantly larger than the Zahl).
I'll rework the weapons to match, and I'll try to see about getting around to updating the article.
On another note, I just realized that I was looking at the old warship limitation article, so I may end up revising the weapons a bit more, due to some confusion in which I had about load-out limitations and what constitutes a cap-ship.