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ZS Open

Mobile high load jammer

The essential solution for peeling spinnakers, headsails, and reefing - unbeatable in an emergency

from £1,212.20 inc. VAT


  • Easily attached to any strong point with a strop
  • Hinged body can be opened and closed like a snatchblock
  • Acts as an emergency line clamp in case of winch or other hardware failure, jammed halyards, riding turns or damaged lines
  • Frees a winch for a sail change
  • Custom options include rig or deck mounting holes
  • Designed for use with Load Sense for load measuring and development projects
Lines: 8mm - 32mm (5/16" - 1 1/4")
Loads up to 7800kg (17,190lbs)

ZS0810/OPEN - 918g (32.4oz)
ZS1014/OPEN - 1349g (47.6oz)
ZS0810/OPEN - 2138g (75.4oz)
ZS0810/OPEN - 4150g (145.3oz)
ZS0810/OPEN - 6100g (213.5oz)
Use strop (not supplied) to attach ZS Open Jammer to a strong point on the deck


Choose your ZS Open

  • Rope Size
Choose your options to see prices


ZS Open Jammer, Lines 26-32mm

✓ Available

£13,800.67 inc. VAT

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ZS Open Jammer, Lines 8-10mm

✓ Available

£1,212.20 inc. VAT

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ZS Open Jammer, Lines 10-14mm

✓ Available

£2,117.81 inc. VAT

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ZS Open Jammer, Lines 14-18mm

✓ Available

£3,160.97 inc. VAT

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ZS Open Jammer, Lines 18-24mm

✓ Available

£6,767.78 inc. VAT

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