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Lashing to Boom

4

When lashing to a large object  

such as a boom, cross each line 

to prevent sides of head from 

pushing out. See next page.

Lines can pull block head apart.

If you have access to end of 

boom, twist each lap. Secure 

using double fisherman's 

knot or other secure knot. See 

"Lashing to Bail Using Harken 

Supplied Line" below.

Under

Over

Under

Over

Under

Over

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 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 

2167 

2170

57 mm

57 mm

HCP392

  1/8

3

4

1.22

Maxibraid

Choosing Knots and Splices

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