Tubbataha Reefs Philippines, 06 - 12 May'08

Kevrumbo · May 19th, 2008, 04:55 AM

Three consecutive days of 69m/230' dives, three hour SIT and then a second dive to 36m/120'; and the last two dive days "conservatively" one dive at 60m/200' and 30m/100' respectively only because of rough weather & sea state --all profiles planned with Ratio Deco. (Nothing at all like the month's worth of diving below 75m/250' like Andrew Georgitsis did to validate the method, but good enough for me: I'm totally convinced of RD's utility & viability and confident in applying the method, especially when the nearest Recompression Chamber to my location at this remote atoll was ten hours away by boat

)

Fabulous deep wall/reef diving; saw schools of Yellowfin, Bluefin and Dogtooth Tuna; swirling formations of Jack & Trevally and Great Pacific Barracuda. The recreational divers above us at 24m/80' thanked us deep tech divers for "flushing" the Hammerheads and a Thresher Shark up to them (I didn't get to see them at all

!). Thanks to George AngDyPay, proprietor of Board Dive Center for putting together the first organized deep mixed gas on the Explorer Liveaboard Fleet out to Tubbataha; for providing the tanks, Helium and Oxygen Supplies, booster pump and arranging the logistics to get it out to the Borneo Explorer Liveaboard. (A proposed mixed gas itinerary is being planned for the Pacific Explorer in Truk Lagoon as well).

69m/230' 1:2 Profile:

Depth (m) Time (min):
69m 15min
69 to 51 2min (ascent @ 9m/min)
51m 5sec pause (Deep Stop)
48m 5sec
45 5sec
42 5sec
39 5sec
36 1min stop (Deep Stop)
33 1min
30 1min
27 2min
24 3min
21 7min (50% Eanx deco stop)
18 7min
15 2min
12 2min
9 2:3min (3min Backgas Break)
6 10:5min (O2 decostop:5min Backgas Break)
3 5min (on Oxygen to Surface)

Bottom mix: 18/45 (17/46 as actually analyzed)
DCR: 16L/min (0.6cf/min)
MGR: 100bar (half of backgas Dbl 11L/Dbl AL80's)

Water temperature: 30deg C to thermocline @51m; 26deg C at 69m

Tubbataha Reefs: a United Nations World Heritage Site. . .

May 19th, 2008, 04:55 AM	#1 (permalink)
Kevrumbo(Offline) New Member Join Date: Dec 2005 Location: El Segundo CA, South Santa Monica Bay, USA Posts: 133	Tubbataha Reefs Philippines, 06 - 12 May'08 Three consecutive days of 69m/230' dives, three hour SIT and then a second dive to 36m/120'; and the last two dive days "conservatively" one dive at 60m/200' and 30m/100' respectively only because of rough weather & sea state --all profiles planned with Ratio Deco. (Nothing at all like the month's worth of diving below 75m/250' like Andrew Georgitsis did to validate the method, but good enough for me: I'm totally convinced of RD's utility & viability and confident in applying the method, especially when the nearest Recompression Chamber to my location at this remote atoll was ten hours away by boat ) Fabulous deep wall/reef diving; saw schools of Yellowfin, Bluefin and Dogtooth Tuna; swirling formations of Jack & Trevally and Great Pacific Barracuda. The recreational divers above us at 24m/80' thanked us deep tech divers for "flushing" the Hammerheads and a Thresher Shark up to them (I didn't get to see them at all !). Thanks to George AngDyPay, proprietor of Board Dive Center for putting together the first organized deep mixed gas on the Explorer Liveaboard Fleet out to Tubbataha; for providing the tanks, Helium and Oxygen Supplies, booster pump and arranging the logistics to get it out to the Borneo Explorer Liveaboard. (A proposed mixed gas itinerary is being planned for the Pacific Explorer in Truk Lagoon as well). 69m/230' 1:2 Profile: Depth (m) Time (min): 69m 15min 69 to 51 2min (ascent @ 9m/min) 51m 5sec pause (Deep Stop) 48m 5sec 45 5sec 42 5sec 39 5sec 36 1min stop (Deep Stop) 33 1min 30 1min 27 2min 24 3min 21 7min (50% Eanx deco stop) 18 7min 15 2min 12 2min 9 2:3min (3min Backgas Break) 6 10:5min (O2 decostop:5min Backgas Break) 3 5min (on Oxygen to Surface) Bottom mix: 18/45 (17/46 as actually analyzed) DCR: 16L/min (0.6cf/min) MGR: 100bar (half of backgas Dbl 11L/Dbl AL80's) Water temperature: 30deg C to thermocline @51m; 26deg C at 69m Tubbataha Reefs: a United Nations World Heritage Site. . . __________________ "Live never to be ashamed if anything you do or say is published [or posted] around the world --even if what is published is not true. . ." Last edited by Kevrumbo; May 23rd, 2008 at 09:50 AM.