- charge stratification
- charges prepaid
- charging point
- chart
- chart datum
- charter to
- charge indicator
- chargeable distance
- chart scale
- chart table
- charter
- charterage
- chartered accountant
- check weight
- chief guard
- chimney netting
- chennelization
- chief dispatcher
- chief mate
- chord ratio
- circuit interconnection
- circular journey
- circumferential speed
- clasp brake
- classification
- classification detector
- clear
- chock
- choking
- chord
- circuit closer
- chronometer
- cinder ballast
- civil engineering
- clean bill
- clearance
- cleat
- classification siding
- classification track
- claw off
- clean configuration
- clean draft
- clear width
- clearance axis
- clearance envelop
- clearing
- clerestory
- climatic detector
- climb
- climb cruise
- climb gradient
- climb out
- climb phase
- clipped wing
- clove hitch
- club
- cluster
- coast
- coastal defence
- coastal defense
- coastal navigation
- coastal trade
- coastwise trade
- coaxial propeller
- climb angle
- climb corridor
- climb speed
- climb turn
- clinch
- clip pulley
- closed barrier
- closed container
- closed gate
- closed locker
- closed loop
- cock
- cockpit
- cockpit drainage
- code flag
- cold front
- collective pitch
- collector shoe
- coil up
- coir
- collapsible boat
- collico
- collide with
- collier
- combined vessel
- come-to
- collapsible section
- commodore
- common branch
- common carrier
- common crossing
- common return
- combustion control
- commercial traffic
- commission
- compressor blade