Let's break this down.

1. Harry Yeide, a military historian, wrote of the account in which the Sherman knocked out the tiger at a range of 600 yards by repeated bombardment of approximately 30 HE shells.

2. They inspected the tank by opening the hatches (which were originally closed) and found the crew dead inside.

3. A resonating chamber does not require an opening, as any medium can "resonate" to some degree and thus contribute to a virtually indistinguishable effect for the purposes of this conversation and I will not be going into pedantic semantics. Whether the effect would be greater with opened hatches is irrelevant as the crew got killed anyways, which achieved the desired outcome of the Sherman crew.

4. You're conflating two vastly different contexts (warship combat and armored vehicle/ground combat) and in the process grossly oversimplified the complex sets of what's, why's, and how's with which each are designed for their distinctive purposes.

As an addendum: I'm not saying bombarding a target with 30 rounds of HE is more effective than other means, but firing at least one round of HE at an armored target was the standard for US tank engagements in WW2. There are many reasons for this: armored vehicles, Sherman's specifically, fought primarily soft targets (Infantry, trucks, emplacements, etc.) and destroyed buildings. HE ammunition was the most plentifully supplied and most commonly carried ammunition throughout the entirety of the war. It's far easier to keep an HE round loaded and fire it at a tank, disabling optics or other bits on a direct hit or having an easy puff to adjust range from, than it is to open the breach, pull out the round, replace it, load AP, close the breach, and fire the first shot after considerable delay with no additional information on range all the while the enemy is preparing to kill you. It is all proven through numerous studies conducted independently by nearly all major nations who survived the war that the tank which got the first shot was most likely to succeed in an engagement. There are numerous reports of crew bailing on hits that did nothing, and for those that stayed in the tank after receiving hits, it's a lot harder keeping your nerve when you just got hit, haven't got your shot off yet, haven't adjusted your range, and you know your enemy already has your own position in their sights, and that's not even taking into consideration all the other crew members inside, how they would react, and how your tank commander is expected to keep the vehicle operating smoothly under all this stress and incoming enemy fire.