Class B+ is a new generation of AIS functionality based on SOTDMA (self organised TMDA) messaging rather than the simpler CSTDMA (carrier sense TDMA)
Yoke-style bladder provides good neck and head support in the water
Powerful 30 Watt integrated PA system with Loudhailer and listen back capabilities
The over-the-head entry provides a secure fit
BlueChart g3 HD features 1-foot contours that provide a more accurate depiction of bottom structure for improved fishing charts and enhanced detail in swamps
Schaefer Single, Front/Side Shackle Boat DN Class B+ is a newStainless Steel cheeks with front side shackle. Delrin(tm) sheave ensures smooth operation and high safe working load. Sheave Dia. 1 7 16", Thickness 3 4" (19mm), Width 1 9 16" (40mm), Length 3 25 32" (96mm), SWL 1000 lbs (410 kg), Weight 2. 6oz. (73g), Max Line 7 16" (8mm)