Until this accident happened, NONE of this stuff was a problem. If it was such a problem, why was it not addressed before the accident? Obviously everyone who ever used these boats in the nearly 40 years they have been running is at fault for not reporting these glaring issues.
I fully agree that we should wait until the report is out to decide exact actions. However, it is already quite clear that standards likely need to be changed on ALL liveaboards!
The density of divers below deck and the emergency egress methods/locations on this vessel give me pause (and scare me) - as others have said, it was not a setup likely to provide a good outcome if and when sh_t hit the fan. Of course, hindsight is always 20/20 - but it's pretty clear, if one is being honest, that the boat configuration was far from ideal if anything requiring a rapid evacuation ever went down!
The answers to your question in bold above are many, but likely include:
- If it was "good enough" for years, folks are usually unwilling to invest to make changes on something that has not been viewed as a problem. That is, until something catastrophic happens and forces analysis on what went wrong and how it can be prevented. Heck, hydrogen airships were quite common and had a poor track record - but no real action happened until the Hindenburg disaster:
Hydrogen Airship Disasters | Airships.net
- Changing Tech adds risks that may not be well understood. Regardless of the true root cause of this tragedy, it is clear to me that lithium ion batteries and chargers in common use these days present a potential fire risk that may not be properly understood and accounted for on liveaboards (new and old). In fact, it's caused me to rethink where I store and how/where/when I charge Li-ion batteries at home. As tech changes, risk assessments should be more commonly used to determine if changes are warranted.
- Simple economics - many ops likely operate on slim margins and may be hard pressed to spend $ on refitting boats, especially if divers are unwilling to pay for extra safety! On that note, I'm continually amazed at posts I see here with divers trying to pinch pennies on equipment that their lives depend on - so I'd bet that cost pressures are very real for ops!
As 34 people lost their lives in this accident, I hope that we can truly learn from it and make changes that prevent a reoccurrence - even if it means new restrictions and higher costs!