The Jimmy Green Rigging Team make professionally terminated Jackstay Lifelines in plain, smooth finish or PVC covered stainless steel 1x19 wire to your individual measurements.
All Jackstay Lifelines are produced from KOS wire, generally acknowledged in the marine industry as the world's leading stainless steel wire manufacturer in terms of consistent high quality.
Guardwires are generally made from 4mm or 5mm diameter wire but 6mm is available for larger yachts.
4mm 1 x 19 stainless steel wire, KOS MBL = 1400kg, 5mm 1 x 19 stainless steel wire, KOS MBL = 2000kg, 6mm 1 x 19 stainless steel wire, KOS MBL = 2880kg
The Jimmy Green Rigging Sales Team are happy to advise you on building your Guardwires, Guardrails, Jackstays or Lifelines.
Follow these steps to get an instant quote and complete the order yourself
Step 1 - Choose your terminal
Step 2 - Select the wire and enter your finished length. This will be the length from bearing edge to bearing edge.
Step 3 - Choose your terminal option for the other end
N.B. The website will accept a length to 3 decimal points. However, this is not always practicable. The Jimmy Green Rigging Team aim for a bearing edge to bearing edge measurement which is accurate to within + or - the diameter of the wire.
Check the item is designed as you wish. You can alter any of the boxes and the website will update the picture and the price. Check the quantity that you want to purchase and click the green Add to Basket button to put it in your shopping basket. Select Continue Shopping or Proceed to Checkout to view a short summary of the items you have selected, hover over the pale green Basket icon in the green banner, top right of the webpage. To view a detailed description of the items you have selected, click on the pale green Basket icon in the green banner, top right of the webpage or hover over Basket and click on Checkout.
Terminals for Jackstay Lifelines
Try to avoid too much clunky metal on the deck. Check your existing deck strong points to judge which terminals will be a suitable fit. Use the Lanyard Eye and Stud option for finishing with adjustable lanyards at one or both ends. Use a fork terminal or taurit thimble eye and a shackle for attaching to e.g. a U bolt
Measuring your Stainless Steel Wire Jackstays
All deck jackstays should be fitted so that there is a degree of lift in the centre of the line before any significant load is applied.
The height of the lift should be proportional to the overall length of the jackstay and make allowance for the lack of give (stretch) stretch in the Lifeline.
Wire Lifelines have zero elongation and will therefore need to have a degree of slack to prevent excessive load on the end fittings when under load, due to a 'bowsing' effect.
It may also be difficult to get the safety tether hook under a taut stainless steel wire.
Jackstay Fitting Considerations
Safe Attachment - It is important to be able to clip on to the jackstay line while you are in the cockpit and still be able to venture as far forward (and aft) as possible, without having to detach yourself.
This means that the jackstay line needs to 'overlap' the cockpit domain (it should at least run by the outside of the coaming so you can reach it from inside the cockpit). It also needs to negotiate a path around or over the natural obstacles such as hatches, lower shrouds, grab rails, cleats, windlasses, bollards etc. so that the person clipped on to the jackstay line has a clear path to the forestay/pulpit (or pushpit).
Man Overboard Prevention - the path forward should be as near the centre line as practicable
e.g. inside shrouds, over but commonly around the curve of the coachroof.
Clipping on to a jackstay that is too near the guardrail may result in a casualty left dangling in the water after the fall has been arrested e.g. outboard of the leeward rail with the yacht heeled over.
N.B. The MAIB SAFETY BULLETIN 1/2018 has highlighted the importance of routing any jackstay or lifeline in such a way as to minimise the chances of a hook getting caught underneath any deck fitting and especially mooring cleats.
"SAFETY LESSON To prevent the strength of a safety harness tether becoming compromised in service due to lateral loading on the tether hook, the method used to anchor the end of the tether to the vessel should be arranged to ensure that the tether hook cannot become entangled with deck fittings or other equipment"
The Jimmy Green Rigging Team Finished Length Process for Wire Rigging
- Terminate one end
- Secure the terminal to the bearing edge pin in the measurement trough
- Lay the the wire out straight against the fixed tape measure
- Calculate and mark a. the turning point for talurit eye splice or b. the cut off point for a roller swaged terminal at the other end of the wire
- Estimate the length to add or deduct (talurit or roller swage process) and cut accordingly
- Complete the second temination
- Check the finished length against your order.
The terminal price includes the talurit or roller swaging process
Bearing Edge to Bearing Edge:
The picture shows examples for the Bearing Edge - The point from which your measurements will be taken.
Measurements on Swaged Studs will be from the extreme end of the thread.
The Jimmy Green Rigging Team aim to produce your rigging within a tolerance of + or - the diameter of the wire.
All adjustable end fittings will be set at the 2/3 open position unless otherwise requested.
The pictures below show examples for the Bearing Edge - The point from which your measurements will be taken.
Measurements on Swaged Studs will be from the extreme end of the terminal:
Stud terminals generally require an absolute minimum clearance diameter hole in the stanchions for them to pass through without getting stuck or meeting awkward resistance:
4mm diameter wire - the absolute minimum clearance diameter hole = 8mm
5mm diameter wire - the absolute minimum clearance diameter hole = 9.5mm
6mm diameter wire - the absolute minimum clearance diameter hole = 13mm
The Jimmy Green Rigging Team have collated and listed the actual stud dimensions published by the manufacturers in a chart, the studs for Guardwires, Jackstays and Lifelines will be the same:
DETAILED DIMENSIONS FOR GUARDWIRE SWAGE STUD TERMINALS
RS = Rigging Screw
1/4 or similar refers to UNF thread size
M6 or similar refers to Metric thread size
RH = right-hand
LH = left-hand
The Jimmy Green Rigging Team suggest a 200mm - 250mm (8''-10") gap, if you are using lanyards to secure one end.
The Jimmy Green Rigging Team undertake to check your wire and terminals meticulously during the production process, to ensure that they are 100% First Quality.
The Jimmy Green Despatch Team make a second thorough quality inspection of each item, including a careful check that it matches your order, before packing it into your parcel
Please take extra care when ordering because once a bespoke item has been started (cut), it can neither be cancelled nor returned for a refund.