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Marine-Duty A-Frames & Derricks

Timberland Equipment & Almon Johnson have earned a reputation for supplying durable and functional A-Frames and Derricks to the construction and marine industries since 1947. Most Timberland A-Frames and Derricks are custom designed to suit load rating and boom radius requirements for your project. We supply derricks with lifting capacity up to 500 tonne.

Use Timberland’s exclusive Derrick Capacity & Reaction Calculator to quickly calculate all member forces and reactions for portable derricks.

A few of our products are highlighted below. Contact us for your specific needs.

50 Ton capacity A-Frame with 115 degrees of motion and 49 ft. (14.9 m) height to bottom of cross head. Unit is complete with a Passive Motion Compensator

150 Ton, 110 ft. (33.5 m) Boom used for leg erection on Jack-Up Drilling Rig or for a Marine Construction Barge

300 Ton capacity Shearleg Derrick, 250 ft. (76 m) boom