matt_unique
Guest
I agree with DA on the 30's and 40's for deco bottles. I use a 30 and an 80 for the reasons DA described. There are some dive sites (Block Island Sound) that are a long way from a Nitrox bank. There is one dive shop on BI for example and they have only air. I take an 80 and it lasts me 3 dives easily. When I am diving closer to home or just a single deco dive I take a 30 because it's less mass to deal with.
Here are the gear requirements for the Deco Procedures and Adv. Nitrox but your instructor may very well have some additions. I will mark my suggestions with ***.
Deco Procedures/Adv. Nitox
Required Equipment:
Primary cylinders- Cylinder volume appropriate for planned dive and student gas consumption and with reserve gas.
Decompression Mix Cylinders- Cylinder volume appropriate for the planned dive and student gas consumption with gas reserve. SPG's required on stage cylinder/regs. Cylinders labeled in accordance with TDI standards.
Depth gauge and automatic bottom timer and/or dive computer. (Back up bottom timing and depth gauge highly recommended). ***My instructor required 2 means for bottom time and depth. I use a computer as a primary and a UWATEC Digital Depth Gauge as my backup.
Regulators-Primary and alternate second stage required on all primary cylinders. SPG's are required on all cylinders. ***We were required to have one SPG for doubles (not one for each tank if using manifolded doubles) and of course an SPG on all deco bottles.
BCD adequate for equipment configuration. ***BC can be used but you will likely find it inadequate to properly/conveniently hold all the necessary gear.
Jon-line and other rigging lines as dictated by site conditions.
Ascent reel with lift bag/surface marker buoy. Line on reel adequate for planned depth. Minimum 50lb lift bag. ***Instructor required 2 lift bags and 2 reels. One bag had to be 100lbs of lift.
Exposure suit adequate for maximum planned depth. Argon may be used for dry suits.
O2 analyzer (may be supplied by the instructor)
Underwater slate. ***Instructor required 2 - if you lost one you would be screwed unless you happened to memorize all your stops and times.
If using doubles/twin tank kits: isolator manifold with two regulators. 7' hose to be on the primary regulator. DIN valve manifolds preferred.
***For Advanced Nitrox you would also need access to a gas analyzer but most likely your instructor/shop would provide it.
Definitely check with your instructor to get the scoop.
--Matt
Here are the gear requirements for the Deco Procedures and Adv. Nitrox but your instructor may very well have some additions. I will mark my suggestions with ***.
Deco Procedures/Adv. Nitox
Required Equipment:
Primary cylinders- Cylinder volume appropriate for planned dive and student gas consumption and with reserve gas.
Decompression Mix Cylinders- Cylinder volume appropriate for the planned dive and student gas consumption with gas reserve. SPG's required on stage cylinder/regs. Cylinders labeled in accordance with TDI standards.
Depth gauge and automatic bottom timer and/or dive computer. (Back up bottom timing and depth gauge highly recommended). ***My instructor required 2 means for bottom time and depth. I use a computer as a primary and a UWATEC Digital Depth Gauge as my backup.
Regulators-Primary and alternate second stage required on all primary cylinders. SPG's are required on all cylinders. ***We were required to have one SPG for doubles (not one for each tank if using manifolded doubles) and of course an SPG on all deco bottles.
BCD adequate for equipment configuration. ***BC can be used but you will likely find it inadequate to properly/conveniently hold all the necessary gear.
Jon-line and other rigging lines as dictated by site conditions.
Ascent reel with lift bag/surface marker buoy. Line on reel adequate for planned depth. Minimum 50lb lift bag. ***Instructor required 2 lift bags and 2 reels. One bag had to be 100lbs of lift.
Exposure suit adequate for maximum planned depth. Argon may be used for dry suits.
O2 analyzer (may be supplied by the instructor)
Underwater slate. ***Instructor required 2 - if you lost one you would be screwed unless you happened to memorize all your stops and times.
If using doubles/twin tank kits: isolator manifold with two regulators. 7' hose to be on the primary regulator. DIN valve manifolds preferred.
***For Advanced Nitrox you would also need access to a gas analyzer but most likely your instructor/shop would provide it.
Definitely check with your instructor to get the scoop.
--Matt
