Seeing dozens of those things being fired from then detonating 2000 yards away from a ship would be impressive.
There are some neat distance videos of cluster bombs detonating on ground targets, but I’ve never seen any over water, likely being much less effective because most are unguided. So using the parachute and guidance system would make them much more efficient.
A propane bomb over water would be staggering. The blast effects might even bounce off the surface of the water, multiplying them. They definitely need to do some experiments with that to discover its dynamics.