Front View - Geared Up


In this picture:
7' LP primary regulator "longhose" (yellow)
24" LP backup regulator hose (red)
26" LP drysuit inflator (green)
26" HP SPG hose (black)
17" lpi hose (blue) connected to a 13" corrugated hose

Note the 7' LP primary regulator longhose (yellow) comes from under the light canister across the diver's torso (over the drysuit inflator hose), over his left shoulder, behind his neck and over his right shoulder to the primary 2nd stage.  This is the 2nd stage the diver breathes from during the dive and donates in an OOG emergency.   Note the diver turning his head to the left, ensuring he has adequate slack to turn his head fully.

​Also note the 24" LP backup/secondary regulator hose (red) comes over the diver's right shoulder and is held in place via a bungee'd necklace.

​The LP drysuit inflator hose (green) is routed under the diver's left arm and is connected to the drysuit inflator mechanism.  Note the importance of connecting the drysuit inflator hose prior to donning the 7' longhose, to avoid "trapping" the longhose under the drysuit hose, preventing full deployment of the longhose to an OOG diver.

In this picture:

Left side

  • 17" lpi hose (blue) connected to a 13" corrugated hose 
  • 26" LP drysuit inflator hose (green)
  • 26" HP SPG hose (black)
  • ​7' LP primary regulator "longhose" (yellow)


​Note how the lpi/wing inflator hose routes from the left side, along the wing's corrugated hose.  It is held in place along the corrugated hose with a bicycle inner tube.

​The drysuit inflator hose (silver) routes from the left side, under the diver's left arm and under the left shoulder harness.  There are no loops are bulges, keeping the inflator tight and clean under the diver's armpit, eliminating entanglement hazards.

The HP spg hose (black) is routed from the left side and straight down, where the spg is clipped to the diver's left waist d-ring.  This keeps the HP hose clean, with no bulges or loops.

Left Side

The low pressure inflator, or lpi (illustrated in blue), is connected to the left side of the 1st stage and is routed along the corrugated hose via bicycle inner-tube, and connects to the inflator mechanism.  The length of the lpi hose will vary depending on the length of the wing’s corrugated hose.  The lpi hose length should be such that it's not too long, where it has a large “loop” or wide bend, or “pushes” the corrugated hose down, nor too short, “pulling” the corrugated hose up. 

​The drysuit hose length (illustrated in green) is as needed so as it does not restrict the diver’s movement, nor does the hose form a “loop”  or wide bend causing unnecessary entanglement hazards or clutter.  It should be routed from the left side of the 1st stage, under the diver’s left arm and shoulder harness.

When geared up (pictured below), the diver routes the longhose (illustrated in yellow) from the right side down behind, under the light canister, around the waist and up across the chest and around the left side of the neck and into the diver’s mouth.  The excess of the hose is stowed behind the light canister or, if no canister, tucked into the waist strap or under the knife sheath.  

The backup regulator's hose (illustrated in red) is typically 22-24" and is routed over the diver's right shoulder.  The length of the backup hose must be long enough to allow the regulator to rest under the diver's chin when not in use and allow enough freedom of movement to fully turn and look to the left when in use.  However, if the hose is too long, it will rest over the right chest D-ring, making it difficult to attach or deploy equipment from that D-ring and/or may possibly trap the hose as equipment is attached to the D-ring, over the hose.

The primary regulator is the reg the diver breathes from during the dive.  It is also the regulator that is donated to an out of gas (OOG) diver.  In the event of an out of gas situation, the donor donates the regulator he/she is breathing.  This ensures the out of gas diver receives a known working regulator with a gas that is breathable at that depth.  

In open water, non-overhead environments, it allows the divers the flexibility to facilitate a side-by-side direct or swimming ascent, or a face-to-face direct ascent, as needed.  To enable this, the primary regulator typically has a 5-7' hose (7' for overhead environment) "longhose".

The Hogarthian single tank equipment configuration is a very simple configuration used for shallow, non-overhead, non-technical dives. Due to the smaller volume of gas and lack of redundancy when compared with the double tank configuration, single tanks are typically used to depths no deeper than 100fsw, with no overhead.

​One major advantage of the Hogarthian gear configuration is its scalability.  The same basic gear platform is used when diving a shallow recreational reef dive or while using doubles and multiple stages and/or deco bottles to explore a cave, wreck.  Extra equipment is simply added or removed as needed and dictated by the dive objectives.

This equipment platform includes the backplate & wing and a consistent and standardized regulator configuration.  While the double tank configuration includes two tanks, two valves and two 1st stages, the regulator configuration of the single tank setup, with a single valve and a single 1st stage is very similar in terms of hose routing.

For example, all regulator hoses are routed over the diver's right shoulder, and the spg, wing inflator and drysuit inflator hose are all positioned on the diver's left side.  For a detailed explanation of why the hoses are configured and routed this way, see our
Doubles Regulator Configuration Page.

This top-down building block method allows the diver to build muscle memory on the core platform that will translate to all diving environments that they may enter in their future diving, maximizing the enjoyment, safety and efficiency of the dive. 

When setting up your single tank regulator, it’s important to keep a few points in mind;


  • Use proper length hoses to ensure clean hose routing and to avoid having hoses stick out or "up" unnecessarily where they could damage (or be damaged by) the dive environment and/or cause unnecessary drag.​

  • Hoses should not have hose protectors, as they collect moisture, salt and sand and serve no useful purpose​

  • ​​To remain consistent with the double tank configuration, the hoses for both the primary and back regulators come off the right side (oriented to the diver, while wearing the tank) of the 1st stage.  These are the only 2 hoses that are on the right side of the 1st stage.  All other hoses, including the hp SPG hose, LPI (wing inflator) hose and drysuit inflator hose are connected on the left side of the 1st stage.


This is designed to provide insight into the Hogarthian single tank regulator configuration and the logic behind the configuration.  It's not intended to replace instruction nor teach the diver how to dive using double cylinders.


Hardware

  • 1 1st stage regulator

  • 2 2nd stage regulators

  • 1 submersible pressure gauge (spg)

  • 1 5-7' LP primary regulator hose (7' for technical or overheard diving)

  • 1 22-24" LP backup/secondary regulator hose

  • 1 26" HP SPG hose

  • 1 appropriate length low pressure inflator (lpi) hose

  • 1 appropriate length drysuit inflator hose


Orientation
When discussing the orientation of the tanks and hoses, we speak in terms of how the tanks are oriented to the diver, while wearing the tanks. 

The primary and backup 2nd stage hoses are attached to the right side of the 1st stage, meaning the right side of the 1st stage when the diver is wearing the tank.

The hp (high pressure) SPG (Submersible Pressure Gauge) hose, lpi (low pressure inflator, or wing inflator) hose and drysuit inflator hose or "whip" are attached to the left side of the 1st stage, when worn.

​When connecting the hoses, all connections should be slightly tighter than finger tight.  Be careful not to use excessive torque when tightening the hose to the 1st stage, 2nd stages or SPG.  A slight nudge of a wrench beyond finger tight is plenty.


​Right Side

SINGLE TANK REGULATOR CONFIGURATION

In this picture:


Right Post

  • 7' LP primary regulator longhose (yellow)
  • ​22-24" LP backup/secondary regulator hose (red)

Left Side
  • 17" lpi hose (blue) coneected to a 13" corrugated hose
  • 26" hp SPG hose (black)
  • 26" drysuit inflator hose (green)
  • ​​24" HP spg hose (black)​


Note the clean hose routing.  Also note the lack of hose protectors on all hoses. There are no large bends where the hose comes off the 1st stage.

Right Side View - Geared Up

In this picture:

Right side

  • 7' LP primary regulator "longhose" (yellow)
  • 24" LP backup regulator hose (red)
  • Light canister


​Note how the primary regulator longhose (yellow), is connected to the right side of the 1st stage and routed down, and under the light canister.  When geared up, the diver routes the longhose (illustrated in yellow) from the right right side of the 1st stage, under the light canister, around the waist and up across the chest.  It then goes over the left shoulder, behind the neck and over his right shoulder and into the diver’s mouth.  The excess of the hose is stowed behind the light canister or, if no canister, tucked into the waist strap or under the knife sheath.  Some wings' construction may require you to route the hose over or in front of the wing.  This keeps the 7' hose clean and tight, with no large loops or bulges. This is also the 2nd stage the diver breathes from during the dive and donates in an OOG emergency.
 

The low pressure inflator hose (blue) is connected to the wing's inflator mechanism.  

The 24" HP spg hose is routed behind the diver's left shoulder and is clipped to the left waist d-ring.

The pictures and guidelines above are the typical configurations.  The port configuration of the 1st stage may dictate small deviations and some wings' construction may require you to route the hose over or in front of the wing.  These modifications will be discussed in your FKD class.

Hopefully this provides an understanding of why the 1st stages and their components are configured and routed the way they are.

For more information on how to dive with the Hogarthian equipment configuration, or team diving, consider our
Essentials of Recreational Diving course.

The spg is connected to the high pressure (HP) port of the 1st stage.  The spg/HP hose (illustrated in black) is typically 24-26”.  It must be long enough to allow the spg to sit over the left hip D-ring, but no so long that it bulges out or allows the spg to dangle below the diver. 


Result
Now that we've covered each hose individually, let's look at how it functions together.

Also note how the backup regulator's hose (red) is connected to the right side of the 1st stage and is routed over his right shoulder. It is routed over the diver's right shoulder to maintain consistency in how the hoses and 2nd stages are routed in the doubles regulator configuration.​


Left Side - Geared Up