12 Ton Telescopic Boom Marine Crane

Where the 12 ton SQ12SA4T fits

The SQ12SA4T lifts 12,000 kg at 2.5 m and 1,200 kg at 16.19 m, with a 33 t·m lifting moment. It suits barges, ports and cargo vessels handling heavy deck cargo, and quays where a fixed crane serves several berths. Its self weight is 4,050 kg on a Ø1,127 mm base plate.

Need a folding boom instead? Compare the 12 ton knuckle boom marine crane (SQ12ZA6T).

We size a marine crane by the load and the radius you need, not by vessel length. Send us the heaviest load, the furthest point it must reach and a deck drawing, and we check them against the SQ12SA4T load chart and the deck space the boom and its rest need when stowed.

Deck mounting dimensions

These figures come from the SQ12SA4T dimension drawing. Your shipyard or naval architect designs the pedestal and the deck reinforcement for the crane’s 4,050 kg self weight and its 33 t·m maximum lifting moment.

We can adapt the mounting to your vessel’s deck, for example by changing the pedestal height. Download the SQ12SA4T dimension drawing (PDF)

Corrosion protection for sea duty

The T in SQ12SA4T marks the marine version, which receives a multi-layer anti-rust treatment for salt air and spray. How long a crane lasts in a harbour still depends on routine care: rinse it with fresh water after salt-water work, grease the slewing bearing, the boom pins and the slide pads of the telescopic sections on schedule, and check hoses and fittings for corrosion.

All telescopic boom marine cranes · How to choose a marine crane

Where the 12 ton SQ12SA5T fits

The SQ12SA5T has a five-section telescopic boom with the hook at the boom head, so it suits deck cargo, barge work and quay handling where the lift stays above deck level. With a self weight of 4,000 kg and a Ø1,127 mm base plate, it is meant for barges, cargo vessels and quays with a strong, engineered pedestal.

With the boom fully extended and raised to 75°, the SQ12SA5T still lifts 2,100 kg at 5 m, which helps when the load has to clear a bulwark, a deck house or a quay edge close to the crane.

Rated capacity always depends on radius. At 9.22 m the SQ12SA5T lifts 3,100 kg and at 12.6 m it lifts 2,000 kg, so check the weight of your heaviest regular load at the distance you need before you choose a tonnage.

We size a marine crane by the load and the radius you need, not by vessel length. Send us the heaviest load, the furthest point it must reach and a deck drawing, and we check them against the SQ12SA5T load chart.

Load at each radius

Figures from the SQ12SA5T load chart with the boom horizontal. Do not lift more than the chart shows at your working radius. Download the SQ12SA5T load chart (PDF)

Deck mounting dimensions

These figures come from the SQ12SA5T dimension drawing. Your shipyard or naval architect designs the pedestal and the deck reinforcement for the crane’s 4,000 kg self weight and its 30 t·m maximum lifting moment.

We can adapt the mounting to your vessel’s deck, for example by changing the pedestal height. Download the SQ12SA5T dimension drawing (PDF)

Corrosion protection for sea duty

The T in SQ12SA5T marks the marine version, which receives a multi-layer anti-rust treatment for salt air and spray. How long a crane lasts in a harbour still depends on routine care: rinse it with fresh water after salt-water work, grease the slewing bearing and pins on schedule, and check hoses and fittings for corrosion.

Warranty and service

BOB-LIFT covers the whole crane for 12 months. Common spare parts leave the factory within 48 hours, and our service team answers within 12 hours and can guide repairs by video. Cranes ship from Lianyungang, Qingdao or Shanghai.

All telescopic boom marine cranes · How to choose a marine crane