a. Official ENC charts
b. Approved ECDIS software
c. Approved hardware
d. Approved installation
e. Chart corrections subscription
a. S-57
a. GPS
b. Gyro
c. Log
a. Electronic Chart Display and Information System
a. IMO
a. IHO
a. They do not comply with the IMO performance standards for ECDIS
a. IMO Resolution A.817(19)
a. No
a. S-57
a. S-63
a. S-52