Sorry, double up. edit
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
60 at 60' [18.2m] group J [off the top of my head], When I as in the Navy years ago [Australian Navy], we used the US Navy tables then.
![]()
Found them.
Interesting -- have they been updated? I think it says 63 minutes on page 493 (Table 9-7) here:
https://www.navsea.navy.mil/Portals/103/Documents/SUPSALV/Diving/US DIVING MANUAL_REV7.pdf?ver=2017-01-11-102354-393
Anyway, I assume that tables are put together based on different algorithms and different assumptions about conservatism if repetitive dive are being done. Just found it interesting that you could get a 10-13 minute different even on a 60 foot dive.
... but Hans Hass did it!Dive computers should never replace a diver’s brain.
... but Hans Haas did it!
https://www.museosubacqueotorinese.com/gestione zoom/multizoom_decompressimetri.php?cod=20&collezione=Decompressimetri e computer&sottocollezione=Computer&cartellafoto=computer&nomefoto=brain&nomemacchina=Deco Brain&nrtumb=4
View attachment 616767 View attachment 616768
this is Deco Brain!![]()
Interesting -- have they been updated? I think it says 63 minutes on page 493 (Table 9-7) here:
https://www.navsea.navy.mil/Portals/103/Documents/SUPSALV/Diving/US DIVING MANUAL_REV7.pdf?ver=2017-01-11-102354-393
Anyway, I assume that tables are put together based on different algorithms and different assumptions about conservatism if repetitive dive are being done. Just found it interesting that you could get a 10-13 minute different even on a 60 foot dive.
The Navy tables have been adjusted by the NEDU, from its inception, to reflect the findings from all the dive logs and reports made on every dive that US Navy divers have made, and their ongoing research.
I know this has been discussed a little bit on other threads, but do you know why the Navy Tables don't have 10 foot deco stops, but spend the time at 20 feet? (My dive computer -- according the manual -- seems to want your last and longest stop to be at 10 feet. I've never been beyond NDL, but just find this interesting.)