Ratchet blocks are hand and crew savers. The eight-sided sheave grips loaded sheets with up to 10:1
holding power. Ratchamatic blocks spin freely in both directions under low load. At higher load, ratchet
engages, providing holding power. As the load decreases, the ratchet shifts back into light air mode
and free spins. Unloaded main and jib sheets run out freely during mark roundings and asymmetrical
spinnakers run free during jibes.
Ratchet Direction
Arrow on side of block shows direction that sheave will spin in ratchet mode.
Refer to arrow when reeving block.
Inspect Line Every Time You Sail
3
Using T2 Ratchamatic Block
Check knots or splices before
sailing. Use a double fisherman's
knot or other secure knot.
See www.harken.com/knots
WARNING! Failure to inspect and correct knots can cause the line to slip suddenly when
load is applied.
Replacement Line
Part
No.
Description
Sheave
Ø
Replacement
Loops /Lines
Replacement line
Ø
Line length
before making loop
Line
Type
in
mm
ft
m
2159
40 mm
40 mm
HCP1419
3
/
32
2.5
4
1.22
Maxibraid
2160
57 mm
57 mm
HCP392
1
/
8
3
4
1.22
Maxibraid
WARNING! Failure to inspect and replace UV-damaged, worn or frayed line can cause
the line to break suddenly when load is applied.
Inspect lashing line for chafe or UV-damage every time you
sail.
Replace damaged line immediately. Replace line with
no visible damage every two-years.
Use Harken replacement
line, but if using own line, see “Using Alternate Line, Knots and
Splices” and chart on back page for important information to
help you select the correct line.
