This is a big list of all my gear that allows me see awesome things underwater:
BUOYANCY COMPENSATION DEVICE (BCD)
My BCD is broken into 2 pieces, the back plate / harness and the wing. This means i can change the lift that i need by simply bolting on a different wing. Very useful as i switch between twinsets and single tank diving.
I also have a storage pack bolted to my wing. This provides an additional pouch which i can stuff another smb or lift bag into. A double ender is attached and clipped onto my butt D ring. I just reach round and rip it our when i need it detaching the clip when removed.
Scubapro MK17 First Stage: I have 2 of these on my twinset. When single tank diving I simply break it down and attach everything to a single MK17.
The MK17 is environmentally sealed, so no water gets in which makes it great for diving in water with debris or heavy silt as it doesn't enter the stage. They also perform particularly well in cold water which most of my diving is. I use a DIN fitting as opposed to A Clamp as it allows a more secure attachment and a lower profile.
I also MK17's on my decompression cylinders.
Scubapro G250v Primary: A big plastic first stage which works well in cold water, and can even be taken apart under water; Nnt that i intend to do that, but you never know! It has 2 adjustors which are great for getting the reg to breathe with a resistance that suits. I just have mine fully open, i don't like having to pull hard on a reg; this is like breathing fresh air!
Scubapro R395 Secondary: A big plastic job that performs well in cold water. It also has a switch to reduce the pressure to ensure it doesn't free flow whilst secured around my neck.
Agir SPG: My backgas SPG. It's big, has a white background and glows in the dark. I can always see it, and it's metal so the build quality is excellent.
Suunto SM-26 SPG: This is a small plastic backed gauge which i use on decompression cylinders. It lends itself to the job extremely due to its size.
It's so easy just to stretch over my drysuit wrists. 5mm bungee cord works best. Another advantage of using bungee is that if your suit compresses at depth your gauge doesn't slip around, clever eh?
Oceanic Shadow (x2): A single lens mask, low volume (so it's easier to clear), and has a black skirt.
The mask also packs very flat, which is great for stuffing a second back up into your dry suit pocket, or when packing a case for diving trips.
I carry a second mask in my dry suit leg pocket as back up.
I love dive lights.
The majority of my diving is done in UK waters, a light is mandatory as far as i'm concerned. They help you see what's going on and are a great aid in buddy awareness and signalling.
It's a 12w LED and works well penetrating the dark, murky UK waters. It has a burn time of 10 hours on full power, and 20 hours on half power.
I have certain items that i carry on every dive and others that only get used depending on the dive itself and the conditions.
Reel: Halcyon Pathfinder 120m. A simplistic design, rugged, easy to use and plenty of line.
Alert devices: I have a whistle which EVERYONE should carry and a mirror for signalling using sunlight. I keep all these securely in my dry suit pocket.
As my regulators are pretty much always set up for twinset diving, I dive twinsets permanently. I have 2 sets to facilitate the types of diving i do:
They are a joy to dive and reasonably light to carry about shore diving.
They are steel euro cylinders with stainless steel bands and a Halcyon manifold.
Ali 7 and Ali 40
The 7l (yellow) is for my 50% nitrox deco gas, and the Ali 40 (silver) is for 100% oxygen deco gas. I have my cylinders permanently marked with big stickers from divesigns.