Operasi Kargo Marin

Quay crane

The quay crane is a rail-mounted or rubber-tyred crane installed on the container berth to move containers from the containership to the stacking yard. The container berth is a designated area alongside the quay where containership load and discharge containers.

Typically, the quay crane is a rope-hoisting ,rope-traversing crane which operates by lifting the container  (hoisting) and moving it along trolley (trolleying) before lowering into position. The quay crane moves along the length of the container berth.It is equipped with spreader beam which attaches to the corner castings of the container to enable it to be lifted.

Item	Detail
Feeder Quay Cranes	The smaller and slower quay cranes used to handle container barges and feeder vessels with containers stacked not more than 13 rows abreast on deck.
Panamax Quay Cranes	Designed to handle Panamax vessels capable of stacking 13 rows of containers abreast on deck.
Post-Panamax Quay Cranes	Designed to handle Post-Panamax vessel capable of stacking 16 rows of containers abreast on deck.
Super Post-Panamax Quay Cranes	Designed to handle Post-Panamax vessel capable of stacking 17-18 rows of containers abreast on deck.
Mega Quay Cranes	The giant and high speed cranes designed to handle Mega container vessel capable of stacking containers 20-24 rows of containers abreast on deck. As at year 2,000, 4 container Terminals have been reported to place orders for Mega quay cranes, namely Salalah in Oman, Oakland in USA, Yokohama in Japan and Hamburg in Germany.

Figure: Principle Particulars of Various Type of Quay Crane.

Principal Particulars	Panamax Cranes	Post-Panamax Cranes	Mega Crane
Outreach from seaside Rail (m)	40.0	48.0	63.5
Distance between seaside rail and seaside adge of fenders (m)	6.5	6.5	7.9
Outreach from seaside edge of fenders (m)	33.1	41.5	55.6
Backreach (m)	25.0	14.0	25.0
Rail Span (m)	26.05	30.0	30.48
Lifting Height from Gantry Rail (m)	30.0	34.0	35.0
Lowering Height from Gantry Rail (m)	15.0	15.0	15.2
Width of Crane-Bumper to Bumper (m)	26.0	27.0	27.0
Hoisting Speed (mpm)-full load	50	70	70
Hoisting Speed (mpm)-no load	120	150	170
Trolley speed (mpm)	180	210	240
Gantry Speed (mpm)	45	45	60