A.2 to 4 seconds B.4 to 6 seconds C.6 to 8 seconds D.8 to 10 seconds
A.Geographical positions outlining the area of the sector B.True bearings as observed from the ship toward the light C.An outline of the area of the sector D.True bearings as observed from the light toward the ship
A.show a fixed red light if lighted B.show a Morse (A) white light C.be square in shape D.have an even number if numbered