The web site
http://www.tarawaontheweb.org/stanjersy1.htm
..has some contradictions with the USN/USMC post battle documents, and Alexander's research. One example from the site text would be:
"At noon, on D-day, the batteries of the USS Maryland BB 46 and the USS Santa Fe CL 60 scored a direct hit on the block house command center shelter and killed Admiral Shibasaki and most of his staff reportedly containing about 300 sea-infantrymen. Although the command center was destroyed and effective command liaison ceased, the morale of the garrison showed no decline."
Post battle reports by the Marines describe the command block house still in action until the 21st, when it's defenders were finally killed by Marines directly assulating it with satchel charges. Destruction by direct assualt is substantiated by the citations and supporting documents for awards given to the leaders of the assualt on the command blockhouse. Other support for this is from the post battle evaluation of the naval gun fire. That report describes no substantial penetration of the blockhouse by the naval guns of any caliber. Interrogation of the 14 surviving Japanese naval garrison (the surviving Korean laborers do not seem to have been questioned), specifically of the Petty Officer & the Warrant officer suggested that the Garrison commander & his command group were killed by one or more 5" projectiles from a destroyer, while they were moving out side the command bunker to better organize a counter attack.