With the current technology, regardless of the value of 100 knots, ultra-high speed definitely needs some unconventional propulsion technologies-not to mention magnetic fluid, and rockets are similar. Simply put, there can be no mechanical transmission structure. However, I estimate that its maximum cruising range is 100 nautical miles and its cruising capacity is 1 hour.

Nowadays, military discussions are unconstrained and unconstrained. In fact, many people only consider the possibility, not from the perspective of engineering-the first consideration in engineering is not whether your scheme can be realized, but which scheme is cheaper.

This thing is not good at all. If it is anti-submarine, I can launch an anti-submarine missile with a speed of several hundred per hour from the submarine, and the cost is only one tenth of yours, and the effect is better. A submarine with a speed of 100 knots was built for what? The speed of global attack is too slow, and the submarine completely deviates from the main means of survival-concealment.

Moreover, an object moving at the speed of 100 knots will have an impact on a large water body, and I suspect it is easy to be found by UAV arrays.