The largest vessel size that can transit the original Panama Canal locks, with maximum dimensions of approximately 294 metres length, 32.3 metres beam, and 12.04 metres tropical freshwater draft. The term applies to both dry bulk carriers and tankers of roughly 65,000 to 80,000 DWT.
Category: Ship Types & Classification
On The Maritime
The desks where this concept is measured.
In the Glossary
Panamax
A ship sized to the dimensional limits of the original Panama Canal locks; in dry bulk, the class just below Kamsarmax.
Read the full explanation in the GlossaryRelated terms
More in Ship Types & Classification
LNG CarrierA specialised tanker designed to transport liquefied natural gas at approximately minus 162 degrees Celsius.LPG CarrierA specialised tanker designed to transport liquefied petroleum gas, primarily propane and butane, either under pressure, refrigerated, or a combination of both.Offshore Supply VesselA vessel designed to transport supplies, equipment, and personnel to offshore oil and gas platforms.Product TankerA tanker designed to carry refined petroleum products such as gasoline, diesel, jet fuel, and naphtha.ReeferA refrigerated cargo vessel designed to transport temperature-sensitive perishable commodities such as fruit, meat, fish, and dairy products.Ro-RoRoll-on/Roll-off vessel designed for cargo that is driven on and off the ship on wheels, such as cars, trucks, trailers, and heavy machinery.
Back to DictionaryEntry updated May 2026