King George V and Prince of Wales show the cost of rushed trials

Do HMS King George V and HMS Prince of Wales show why testing before commissioning matters?

Yes. Their experience shows that rushing a delayed warship program because war has begun can compound earlier industrial and scheduling problems.

Their difficulties followed an attempt to recover from an earlier program pause while shipbuilding infrastructure was already under strain. Wartime urgency made speed essential, yet skipping the work needed to prove a ship could turn a political delay into an operational defect.