I think JQL has one element your design lacks -- exhaust management. But yes, it's in the same vein, especially that patrol-boat installation And that version hits at the reason why you would do JQL instead of something like the ExLS 3-cell launcher -- JQM is a lot shorter. Especially useful if you're trying to bolt it on the upper deck of a vessel like the Mk VI of on the back of a flatbed truck like the JLTV. I think the below-deck version isn't really much better than ExLS except maybe saving some deck penetration if that's critical (as it might be in LCS/MMSC)