| ACRONYM | FULL WORDING | COMMENT |
| C | Raccourci de SHINC (Sundays and Holidays Included) | |
| CBF... GRAIN/BALE | Cubic Feet grain / bale | Units of volume of holds for either fluid cargoes (grain) or solid cargoes (bale, i.e. outside frames) 1 Cbf = 0,028317 Cbm |
| CBM | Cubic Metre | 1 Cbm =35,314475 Cbf |
| CBT | Central Ballast Tank | |
| CBT | Clean Ballast Tank | In use for older type tankers (contrarily to SBT) |
| CF | Cost and Freight | Condition of sale of the cargo (frequently refering to Incoterms) |
| CGO | Cargo | |
| CHABE | Charterers Agents at Both Ends | Inappropriate wording meaning that Vessel’s agents are nominated by the Charterers |
| CHALO ou CHADO | Charterers Agents at Loading/Discharging Only | Same comment as above |
| CHOP | (In) Charterers’ Option | |
| CHRTR(S) | Charterer(s) | |
| CIF | Cost Insurance and Freight | Condition of sale of the cargo (frequently refering to Incoterms) |
| CMI | COMITE MARITIME INTERNATIONAL | |
| CO2 | CO2 (fitted) | |
| COA | Contract of Affreightment | Any C/P is a COA. However "COA" is currently used only for contracts involving more than one voyage |
| COB | Close of Business | |
| COM | Commission (Brokerage) | |
| CONSECS | Consecutive voyages | |
| COP/CQD | Custom of Port/ Customary Quick Despatch | Obsolete wording which has become void of any accurate meaning |
| COW | Crude Oil Washing | Used only in tanker trade. |
| CST | Centistoke(s) | Unit of measurement of viscosity for marine fuels 180 Cst correspond to IFO and 380 Cst to HVF |
| CT | Contract | |
| CTL | Constructive Total Loss | Applies to a ship damaged beyond his intrinseque value and therefore abandoned to hull insurers |
