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construction
A Rocna's advantage is in its design – and construction. With a design philosophy of maximum durability and reliability, in addition to ultimate performance, we're not prepared to compromise in any area.
To begin with, the Rocna design is type approved not just by its designer, the highly experienced professional boat-builder and boater Peter Smith – but also by RINA, the independent certification and classification organization responsible for ensuring the aptitude of critical equipment on yachts and ships worldwide. (For more on RINA, check out the Rocna Knowledge Base article on certification and classification – click here).
Each Rocna begins life in one of our three manufacturing facilities worldwide, located in New Zealand, China, and Canada. Each facility produces anchors to the same stringent specifications and standards, and no compromises or short-cuts are acceptable.
A Rocna consists of three primary components, all formed from modern high quality alloy steels. The fluke (also referred to as the blade) is solid steel throughout, featuring a sharp aggressive toe with a geometry which is folded rather than rolled to form its essential concave shape. This fold reinforces the fluke right the end of the toe, to provide maximum resistance to bending. The roll-bar is pipe, hollow so weight may be allocated elsewhere. The shank is precision cut from top grade high tensile steel plate, which is extremely resistant to the twisting and bending forces present when the anchor is under great load.
Assembled by a team of trained specialists and certified welders, a Rocna is born when the above three elements are locked together to form a massively strong and rigid single piece anchor. The welds have been proven in testing to be the strongest part of the anchor. Edges and details are then hand-worked until the finish is such that you'll be proud to display one on your boat.
The finished steel anchor requires one more stage of processing, one last visit to another specialist – either the galvanizer, for standard steel anchors, or the polisher, for stainless steel anchors. Hot-dip galvanizing puts the virgin steel product through a process whereby it is sand or bead blasted, pre-fluxed, then finally bathed in molten zinc. This provides an outer coating of durable pure zinc, and a tenacious inner layer of zinc-steel alloy. Stainless anchors are hand polished to a perfect mirror finish, for the perfect aesthetic to complement your vessel.
The Rocna design requires no inefficient dedicated tip weight, which means there are no issues if you ever need to re-galvanize the anchor in the future. There will be no expensive complications melting out and remolding a lead tip ballast.
For more, check out the Rocna Knowledge Base article on construction and anchor materials (click here).
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