Shop at for 3Dimensional Studio IALA Magnetic Buoy pack (Medium) A B Buoys perfect Instruction kit for whiteboards, classrooms and schools IALA (B) Starboard mark IALA (B) Preferred Channel Port mark IALA (A) Starboard mark Poppa Balls IALA A Magnetic Buoy Pack Buoys Perfect Instruction Kit Callas Tosca This pack has been created specifically for instructors afloat, it’s the perfect complement to your training days. Carry on to the boat in your dry bag and with the addition of a small magnetic whiteboard (which can be obtained for a few pounds from major retailers), you have a classroom afloat IALA (B) Preferred Channel Starboard mark, North Cardinal mark, South Cardinal mark, East Cardinal mark, West Cardinal mark, Isolated Danger mark, Emergency Wreck mark, Safe Water mark, Special mark Medium IALA A+B Buoy pack contains 16 marks IALA (A) Port mark IALA (A) Starboard Lateral Magnetic Classroom Buoy – 3Dimensional Studio Perfect for whiteboards and ferrous surfaces