<Li> The magnetic compass was first invented as a device for divination as early as the Chinese Han Dynasty ( since about 206 BC ) . The compass was used in Song Dynasty China by the military for navigational orienteering by 1040 -- 44 , and was used for maritime navigation by 1111 to 1117 . </Li>
<Li> The magnetic compass was first invented as a device for divination as early as the Chinese Han Dynasty ( since about 206 BC ) . The compass was used in Song Dynasty China by the military for navigational orienteering by 1040 -- 44 , and was used for maritime navigation by 1111 to 1117 . </Li>
when were the first magnetic compasses used by chinese ships
when were the first magnetic compasses used by chinese ships
1040 -- 44
1040 -- 44