The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found().
A:on loran charts covering areas where sky waves are used
B:in the Radio Aids to Navigation,PUB 117
C:in the Loran-C Correction Tables
D:Sky waves cannot be matched to ground waves in LORAN-C to produce a usable reading
出自:海船船员证