Mailing List Archive Mailing List Archive
Dan, excellent summary. Some questions: Point 1: When is the safety diver put into the water? On an extreme dive of long duration, would the safety diver be at the deepest stop from the start of the dive? Is this the reason for the "float ball" in point 5? If so, what about dives where a shot/anchor line is used? Is there a possibility of tangling from multiple floats? Point 2: I am interested in knowing how one can determine the exact amount of negative buoyancy a wet suit (i.e. uncrushed neoprene) can have at depth. Does neoprene uniformly crush up until a certain depth, at which point it stays a certain amount negative? Is this depth exactly determinable? If not how (without diving it) can this critical depth be determined? Point 3: Given rule of 1/3rds, this implies one instructor per student? How many tech courses does this actually happen on, do you think? thanks, JT -- John Taylor, Marketing and Trading Systems, IT Development Credit Suisse Financial Products (Hong Kong) Ltd, 13F, Tower 3, Exchange Square, Central, Hong Kong Office: +852 2101 6927, Fax: +852 2101 7778, Mobile: +852 9031 6397, email: john.taylor@cs*.co*.uk* > -----Original Message----- > From: Dan Volker [SMTP:dlv@ga*.ne*] > Sent: Wednesday, January 21, 1998 10:24 PM > To: Tech Diver > Subject: 2nd Press Release by DS > > Divers Supply feels they have been the butt of malicious intent on > the > Internet, as evidenced by their 2nd press release. > > As far as I can see, the bulk of the discussion was about how this > dive > could have been safer, and how other divers in the future can be > prevented > from falling victim to a needless death. > > Among Major issues for the future, which have been brought out in this > incident: > > 1 If you do a tech dive, YOU HAVE A SAFETY DIVER Period. There is no > excuse > for no safety diver in the water at the point of the first scheduled > stop---or within a few moments of this. > > 2. A diver's weight on the bottom needs to be calculated, prior to the > dive---this means the exact gear config( including wet or dry suit) > must > have a known positive or negative buoyancy associated with it, and the > lifting capacity of the diver's wings and backup must be known.....and > a > procedure for backup deployment must be known by each tech divers. > > 3. Gas choice and gas management for a student, by an instructor----in > a > teaching dive, supervision is expected and mandatory. In the event of > a > student running out of air, the instructor is responsible to solve the > problem with his own gas supply, should the student's have been some > how > catastrophically lost----or not monitored by the instructor, and > allowed to > reach zero volume. The instructor / student relationship needs another > definition session, as it relates to tech diving. > > 4. Stores need to be concerned about selling tech gear that has a high > failure rate----just as an aircraft company may stop selling a line > of jets > if too many crash---or as Ford was forced to stop selling the Pinto. > > 5. Boats need a float ball to follow, in order for a safety diver to > be > effectively deployed at the proper time. If the tech divers are unable > to > pull the float ball, they are unable to complete a safe tech > dive---since > they will have no expectation of having a safety diver check them out > on > the first few deco stops. > > If these rules had been followed, we would not have 3 dead divers in > WPB. > > Regards, > Dan > > > -- > 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]