PLEASE NOTE: DUE TO SIGNIFICANT SEASONAL DEMAND, ORDER FULFILMENT AND CUSTOMER SERVICE RESPONSE TIMES ARE LONGER THAN NORMAL.

FOR URGENT ORDERS OR CUSTOMER SERVICE REQUESTS, PLEASE EMAIL US WITH THE SUBJECT LINE MARKED "URGENT".

Harken Carbo Ratchamatic Blocks

The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless. Unloaded main and jib sheets run out freely during mark roundings and asymmetrical spinnakers free instantly during jibes.

Ratchet engagement may be adjusted to a higher or lower load according to strength and sailing style. The Ratchamatic® cheek block mounts on either port or starboard. The holding power of the 57 mm is as high as 10:1. The 75 mm is up to 15:1.

For the ultimate system, mount a Ratchamatic® on the boom above a cockpit-mounted switchable ratchet to allow the mainsheet to run freely in light air and to double holding power in heavy air.

Use for:

Main/Jib Sheets

Asymmetric spinnakers