In Canada, required safety equipment includes a life ring, on a 15m floating line but NOT Lifesling or Horseshoe, though those both qualify for the requirement to have a floating heaving line of 15m.
In the US the regs may be different.
Getting into a ring while in the water is no more difficult than getting into Lifesling or a Horseshoe. and as with all safety equipment, practice creates familiarity with the equipment.
__________________
Keith
|