Halcyon Multifunction Compensator, Owner'S Manual

7

T

he Halcyon Multifunction Compensator system provides superior 
buoyancy control and trim adjustment for divers in any underwater 

environment. Each component of the MC system- the proper buoyancy 
wing, alternative lift device, weighting system, and Secure Harness- 
works together to provide you with safe, efficient control of your 
gear while under water and on the surface. Nearly every aspect 
of the Halcyon MC can be individually customized to meet 
the demands of a specific dive’s conditions or the needs of 
multiple dive team members sharing a common set of gear.

The MC harness system is adjustable to fit all body types, 
providing for a much more precise fit than jacket-style 
BCs. The MC has been designed to provide you with optimal 
control of your scuba system while underwater and on the 
surface. 

To properly fit your Secure Harness before first use, begin by 
suiting up with the same thermal protection that you will use with 
your MC. If you plan to dive with a drysuit, make sure to include all 
undergarments. In addition to the thickness of the drysuit, a full set of 
thermal undergarments can add considerable bulk and have a dramatic impact on the sizing of 
the harness.

You can adjust the Halcyon MC harness without the use of special tools by adjusting the triglide 
fastners along the back of the backplate and on the crotch strap (Figure 1). To adjust the shoulder 
straps, loosen the triglide fasteners on the back of the backplate where the webbing feeds 
through the slots (Figure 2). Using equal amounts of webbing from both sides of the waist belt, 
adjust the straps so that several fingers can fit under the webbing along your shoulders (Figure 
3).  The shoulder straps need to be loose enough to be comfortable with your thickest amount of 
thermal protection. The fit of the harness should  faciliate easy doff/donn, both in-water and out-

Fitting Your Multifunction Compensator

Fig. 1: Rear and crotch strap triglides

Fig. 2: Adjusting rear triglide fastner