permanently rigged inner working jib. All of these are carried on hydraulic- powered Reckmann under-deck furlers with maximum torque of 1628Nm at 175bar, 1160Nm at 140bar., and 800Nm at 150bar respectively. The two big headsails can each be unfurled in about 60 seconds and completely furled in 80 to 120 seconds. On both of these furlers, a huge 6,500Nm of braking moment ensures smooth operation and precise control even when fully loaded in heavy weather. Forward of the headsails and permanently mounted on the stemhead, the powerful code zero is Path’s primary driver on most points of sail from a fetch to a broad reach. A removable bowsprit is bolted on and a big A3 is deployed occasionally for regattas, but on passage and in delivery mode the bowsprit is stowed and the code sail serves that purpose more than adequately instead. Reckmann’s CZ-32 has the power – 1080Nm of torque at 180bar and 1,200Nm of braking moment – to unfurl this beast of a sail in just 40 seconds and furl it away again in 60 to 80 seconds. For an all-weather ocean cruising yacht, the ability to achieve a tight furl on all sails and hold it reliably in any conditions is of paramount importance. ‘A tight furl needs proper headstay tension and a sufficient torque performance of the gear, which we have, and to hold the sheet a little tighter while furling the sail,’ Schuldt says. ‘We achieve a static self braking mechanism by either a special worm gear design on the headsail units or a brake which is part of the hydraulic motor assembly.’ Another key feature of Reckmann furlers is their ability to avoid the dreaded stick-slip effect that can
Above: the genoa furler for the new 196ft Malcolm McKeon designed mega sloop Sarissa II, currently in build at Royal Huisman, is a new design by Reckmann powered by twin hydraulic drives. Itʼs pictured here on the testing rig where all Reckmann furlers face a uniquely thorough
series of tests before theyʼre shipped to the customer
send violent shudders through the rig when less well-engineered furling gear operates under high loads. ‘ We use a special material which is used for propeller shafts and other marine applications as well where parts must rotate under all circumstances,’ Schuldt explains. ‘This expensive material avoids the slip stick effect perfectly.’ The design of Reckmann’s halyard swivel also helps: ‘We produce our own special bearings for our halyard swivels to achieve a compact, high load swivel with a reduced friction under load.’ The carbon headfoils supplied by Reckmann deliver significant performance benefits. ‘The weight advantage of the carbon S8 foil on the headstay compared to a comparable aluminium foil is 3kg per metre, which means 180kg on the entire forestay,’ Schuldt explains. ‘The difference of the S7 carbon foil on the inner forestay to an aluminium foil is 100kg in total on the stay. These much lighter carbon foils also allow a much better sail shape and performance. There is less tension needed to get the entire stay straight and tight.’ Sarissa II’s sailplan details and sailing programme are strictly confidential, like most other aspects of that project, but the equipment supplied by Reckmann suggests a versatile setup that is equally suited to fully crewed racing in superyacht regattas and long-range ocean passages with a shorthanded crew. The dimensions and loads of Sarissa II’s huge headsail required a new, more powerful product with two hydraulic drives to be added to Reckmann’s UD series of under-deck headstay furlers. ‘The UD-7.5scRT is a new design and it will go on another, even bigger superyacht as
well,’ Schuldt says. ‘On this yacht it will be equipped with the light and strong S9.5 carbon foils which we have supplied to some other well- known superyachts. These foils allow you to reef the headsail and to sail partially reefed.’ Three Reckmann SF-series staysail
furlers have also been supplied: an SF-65s for the working jib, an SF-45s storm jib furler and an SF-30s for the code sail. All of these have been customised with a special bead-blast finish and the code sail furler’s hydraulic stay adjuster has a custom stroke length. ‘We have a more or less standard
design and do custom modifications if needed to match the client’s expectations and wishes,’ Schuldt says. ‘The SF is a combination of a turning padeye and a hydraulic stay tensioner. The self-aligning deck suspension allows a flush deck installation and avoids bending loads on the extended piston. The furler is equipped with a strong hydraulic brake and a removable stay connector with a quick release pin for fast sail changes.’
Reckmann furlers are already equipped with accurate and reliable built-in load sensors, and Schuldt expects them to interface with increasingly sophisticated and advanced load-sensing systems on next-generation superyachts like Sarissa II. ‘There are very few boats that already have a very good load measuring system installed,’ he says. ‘But nowadays it is even more important to know the loads in the mast and rig while sailing, if you don’t want to oversize the equipment. Such a control system should allow you to adjust the sailing gear as soon as the load limits are reached.’
www.reckmann.com
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