Interesting, because according to the reports on Kerry's website, there was extensive damage to PCF-94 that day. I reposted the text of that report at the thread below (See end for boat damage report). IMO, this sounds like the damage to PCF-3 instead, but the report clearly says PCF-94. A link to the combat report is also provided.
I think the reports were wrong.. They mixed up PCF-3 with PCF 94. No one on Kerry's boat was injured and the PCF 94 was not knocked out of action. Unfit for Command doesn't address it directly, but only PCF 3 was damaged. Kerry's boat was on the other side of the river, the furthest away.