Harken MKIV Unit 1 Ocean Jib Furling System without Toggle
Free UK Delivery

Save: 16%Our Price: £2,350.00 inc VATRRP: £2,784.70 inc VAT

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Lead Time: Please allow 10-14 days for delivery
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The Harken MKIV Unit 1 Ocean Jib Furling System without Toggle is a high - performance furling system designed for ocean - going sailboats. Engineered by Harken, a renowned name in sailing hardware, this system offers reliable and efficient sailing handling in demanding conditions. Featuring the MKIV Unit 1 design, it boasts robust construction and smooth operation, ensuring hassle - free jib furling, even in rough seas.

This version excludes the toggle, providing a streamlined configuration for boats with specific rigging setups. MKIV furlers have been some of Harken's most popular and preferred products owing to their incredible high performance, reliability and ability to be reconfigured for racing. Harken now introduces the MKIV Ocean which offers the superb quality of the MKIV  but is specifically configured and designed for the cruising sailor.

It is engineered with strength, longevity and ease of use without the extra features cruisers might not need. Whether for cruising or racing, the Harken MKIV Unit 1 Ocean Jib Furling System delivers superior performance and durability, making it a trusted choice among sailors worldwide. 

Compatible with MKIV furler toggles.


  • A (mm): 120 mm
  • A (in): 4 3/4 in
  • B (mm): 178 mm
  • B (in): 7 in
  • C (mm): 51 mm
  • C (in): 2 in
  • D (mm): 167 mm
  • D (in): 6 5/8 in
  • E (mm): 78 mm
  • E (in): 3 1/16 in
  • Clevis pin Ø (mm): 15.9 mm
  • Clevis pin Ø (in): 5/8 in
  • Rod Ø (dash): -8
  • Rod Ø (mm): 7.14 mm
  • Wire Ø (1 x 19 SS) (mm): 8 mm
  • Wire Ø (1 x 19 SS) (in): 9/32 in
  • Standard headstay length (m): 13.99 m
  • Standard headstay length (ft in): 45' 11" ft in
  • Maximum headstay length (m): 16.12 m
  • Maximum headstay length (ft in): 52' 11" ft in
  • F maximum (mm): 1175 mm
  • F maximum (in): 46 1/4 in
  • F minimum (mm): 1073 mm
  • F minimum (in): 42 1/4 in
  • G maximum (mm): 305 mm
  • G maximum (in): 12 in
  • G minimum (mm): 247 mm
  • G minimum (in): 9 3/4 in
  • H maximum (mm): 280 mm
  • H maximum (in): 11 in
  • H minimum (mm): 222 mm
  • H minimum (in): 8 3/4 in
  • I maximum (mm): 129 mm
  • I maximum (in): 5 in
  • I minimum (mm)    : 71 mm
  • I minimum (in): 2 7/8 in
  • Extrusion length (m): 2.13 m
  • Extrusion length (ft in): 7' ft in
  • Luff tape size (mm): 5 mm
  • Luff tape size (in): #6 (6/32) in  

Product Code:7511.10


Mainland UK Delivery

Delivery OptionDelivery TimeTrackedSigned ForCost
Standard Delivery (Orders Under £10)2-3 Working DaysNoNo£4.50
Standard Delivery (Orders Under £75)2-3 Working DaysNoNo£6.95
All Standard Orders Over £75)2-3 Working DaysYesYesFREE*

Delivery Surcharges: Liquids, Paint & Gas

Delivery Surcharges: Flares (UK Mainland Only)N/AN/AN/A£25.00
Delivery Surcharges: Large LiferaftsN/AN/AN/A£35.00

Non-Mainland UK and International Delivery

For European and International Deliveries please contact us first for a quote - call on 01326 375482 or email sales@mylorchandlery.co.uk 

How quickly will my order arrive?

Our aim is to dispatch all orders placed before 12 noon on the same day. Any orders placed after that time will be dispatched on the next available working day.

We will send you a notification email when your order has been dispatched. The time your order takes to arrive will depend on the delivery option you have choosen.

Whilst we try our best to dispatch every order following the above guidelines, during extremely busy periods, dispatch times may increase by up to one day.

How can I track the status of my order?

You will receive an email to confirm we have received your order and that your payment has been accepted. You will also receive an email when your order has been dispatched.

In your dispatch confirmation email we will include any relevant tracking numbers, allowing you to track your parcel on either the DHL, Royal Mail & DPD website. However, if the order is under £20 it will be sent standard second-class post with no tracking. You will only receive a tracking number if you have chosen a tracked delivery option for your order.



All orders are thoroughly checked before leaving our premises. On receipt of your order we request that you check the items as soon as possible. If you are unhappy with your order for any reason, please contact us immediately on 01326 375 482 or support@mylorchandlery.co.uk. Please have your order number to hand when you contact us as it will allow us to find your order quickly.

If you are unsatisfied with your order in any way, please return it to us within 14 days of delivery for a refund or exchange. The item must be unused, be in its original packaging and be suitable for re-sale. Items bought in the sale are non-returnable and non-refundable. Postage costs for returning items to us can only be refunded if the item is faulty or damaged.

We recommend that you send your order back to us by obtaining a ‘proof of posting’ (free at all Post Offices) or alternatively using a tracked delivery service. Please note we cannot be held responsible for any parcel lost during transit to us. 

Our return address is:

Web Returns
Mylor Chandlery Ltd 
Mylor Yacht Harbour
TR11 5UF

Once your item has been returned, we will inspect it and take the necessary action as soon as possible.

Faulty/Damaged Goods

If any item you receive arrives damaged, please contact us as soon as possible on 01326 375 482 or by email support@mylorchandlery.co.uk.  We will then advise you on the best course of action. 

In most cases we will ask you to return the item to us for an exchange or refund. Unfortunately we can only refund your postage costs when you return an item to us that is faulty.

Please do not return a damaged order to us without contacting us first.