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Harken Ratchet Blocks

November 19, 2020 2 min read

Harken Ratchet Blocks

Harken ratchet blocks start at a 40mm sheave size and run up to 75mm sheave size for use on a majority of dinghies and catamarans.

There are four types of Harken ratchet block:

  • T2 Soft Attach
  • Carbo Block with On/Off Switch
  • Carbo Block with Automatic Ratchet
  • Power3 Ratchet Blocks

All of these ratchet blocks come in slightly different forms.

T2 Ratchet Block

The T2 soft attach ratchet blocks are popular because they are lightweight with the flexibility of being able to be lashed or spliced anywhere on the boat. The T2 only comes as a ratchamatic which is an automatic ratchet block. As soon as pressure it put onto the block from the attachment point the ratchet engages, when there is no pressure it releases and doesn't engage.

Carbo Ratchet Block

The carbo blocks are popular where the block isn't going to need to move, or where it will sit and happily do the job of making your sheeting easier. This is the standard block issued for a Laser mainsheet block for example, it sits in the middle of the deck with a spring underneath. Carbo blocks are attached using a shackle.

These are available with an on/off switch in the centre, or as an automatic ratchet which can be adjusted using the allen key provided with the block.

Power3 Ratchet Block

The power3 ratchets are the latest blocks from Harken. 

Available as a carbo on/off, automatic carbo and T2 these blocks have two different sheave designs which are more aggressive and grip the rope to provide either 1.5x or 2x the grip you would get from a standard block.

Explore the Range

You can see all of the ratchet blocks we sell at Sailing Chandlery using the link below. Make sure you have a look at the red versions to add a little bit of extra colour to your boat.

Explore the range of Harken Ratchet Blocks at Sailing Chandlery

Harken Ratchet Block Questions?

If you have any questions about any of the blocks we sell at Sailing Chandlery then get in touch with our friendly team who are always happy to help.