Mailing List Archive Mailing List Archive
Kev, The TWA Flight 800 preliminary dives BEFORE the US Navy ship Grasp arrived on the scene were done by Police teams. Their bottom times were limited to 15 minute no-stop limit of the USN air tables. SInce all of the Police scuba teams are "employees" they need to follow OSHA rules. Scuba can only be no-stop for commercial work. Once the USN Grasp arrived there were two types of dives done. Scuba reconnaissance, again no-stop dives and then the "hard-hat" sur-d dives. The sur-D dives were an average of 90 minutes "on-the-bottom" time with deco using some in-water with most in Surface decompression chambers with 100% oxygen. The 275 fsw depth that Flight 990 is in will require surface supplied heliox bounces and if extensive work needs to be done it will have to go to saturation. They can't and wont do this on scuba. Regards, Joel Silverstein At 04:45 PM 11/2/1999 EST, Scaleworks@ao*.co* wrote: >In a message dated 99-11-02 15:47:14 EST, kirvine@sa*.ne* writes: > ><< > This is going to be a hard one. Personally , I would not dive unless > they had some seriously good location equipment to narrow the search. > > As far as profiles, this could be done repeatedly if the bt was kept at > about 18 minutes, and they used scooters, rotating the teams. I still do > not see much getting done by divers like this in any reasonable amount > of time. If they find a wreck field, then maybe. > >> > >Based on a presentation given by a Flight 800 NYPD Scuba Team member, >seriously good location equipment is used. The entire crash area is mapped >with side scan sonar, and each individual "hit" is investigated by a team. >Police members were not allowed to recover any wreckage on the bottom, but >just verify it's identity as wreckage or ocean trash. Surface supplied Navy >divers were then sent down to do recovery with proper evidence recovery >technique, being it was also an FBI investigation. In this methodical manner, >I believe 95 - 98 % of the 747 was recovered. Total bottom times were limited >to 25 minutes, one dive a day, 115' max depth, however, the Navy worked round >the clock, weather permitting. No volunteer divers were used, or asked for. >Needless to say, the depth will most likely preclude >any Police units, and rely on the Navy deep divers. > >Kevin >-- >Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. >Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]