RING CRANES Ӏ PROFILE


in the world. The colossal size and stature of the crane belie its greatest strengths – its versatility and ability to operate in areas where space is limited.


Dirk Knoester on-board the PTC210-DS


Dirk Knoester, senior adviser at Mammoet, explains: “The PTC210-DS is the perfect crane for this job. It has a relatively small footprint combined with 360-degree slewing, with the possibility to switch between fixed and luffing jib mode (as only the PTCs can) resulting in the largest possible working area. “PTC cranes can also be assembled in numerous configurations and thus a tailor- made configuration is feasible for any job: different mainboom and jib lengths, fixed or luffing jib, different amounts of counterweight and two ring diameters.” These attributes made it an ideal crane for this project, where jack-up vessels were to be positioned on either side of Mammoet’s quay - which has a peninsula configuration. So, flexibility was needed to allow two vessels to be worked on together.


SAFETY FIRST The decision to have the PTC210- DS constructed in Mammoet’s own yard was driven by safety and optimising the schedule for the client by being able to refit both vessels at once. Remco Zandstra, senior


commercial manager at Mammoet, said: “Our yard has a unique location in the port of Rotterdam, and this gave us the possibility to position the crane between the two vessels and serve them at the same time.


"Not only does this save considerable time, by minimising movements of cranes in the yard and vessels along the quay, it also creates the safest possible solution to perform this project.” With Wind Orca and Wind


Osprey moored on opposite sides of the quay, the PTC210-DS could be positioned in the centre, slotted between both vessels.


30 CRANES TODAY


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64  |  Page 65  |  Page 66  |  Page 67  |  Page 68  |  Page 69