Sailboat blocks

How to choose this product

A sailboat block consists of one or more sheaves held between two cheeks or chocks. It increases mechanical advantage and can be used to alter the direction of lines running through it.

Applications

These devices have multiple uses on board including mainsail block and tackle, spinnaker sheet guide, barber hauler, hell block, deck block and downhaul tackle, among others.

Technologies

The great majority of cruising sailboat blocks are aluminum or stainless steel. Titanium blocks now can be found on some racing boats, while traditional craft have beautiful wooden blocks. Single, double and even triple blocks are used in block and tackle to increase mechanical advantage, as on a mainsail sheet.

Blocks can be attached via a becket, a swivel, a rotating tower with a jam or cam cleat, a fork, a fabric strop or be screwed to the deck or attached to another fitting. Blocks with narrow metal sheaves are used with cable or wire rope. Sheaves can ride on ball bearings, rollers or a simple friction axle. Ratchet blocks have internal teeth so that the sheave turns in one direction only, making it easier to keep tension on the line.

How to choose

Choice will depend on specific application, line diameter and the possible need for an integrated cleat. Blocks with rollers are generally the most efficient due to reduced friction and increased sturdiness.

53 companies | 1344 products (boats or nautical equipment)

Companies per page

Petersen Stainless
Sailboat high load single block Petersen Stainless

Benefits The Hi-MOD Marine Blocks are a simple and durable cruising block which work well under heavy loads...

Petersen Stainless Hi-MOD
Sailboat double block with swivel (max. rope: 30 mm) Hi-MOD Petersen Stainless

The Hi-MOD Marine Blocks are a simple and durable cruising block which work well under heavy loads and are less prone to jamming . Made...

Petersen Stainless Hi-MOD
Sailboat triple block with swivelling toggle Hi-MOD Petersen Stainless

The Hi-MOD Marine Blocks are a simple and durable cruising block which work well under heavy loads and are less prone to jamming . Made...

Niro - Petersen 740
Sailboat single block for stanchion 740 Niro - Petersen

Plastic roll, ball bearing -for rope inside, for ø 25...

La Nantaise de Poulies 1FA200T - SWL 2000
Triple block for classic sailboats 1FA200T - SWL 2000 La Nantaise de Poulies

Fonctionnalities Triple Hand Strap Optional Becket Optional Rope Specifications Ash...

La Nantaise de Poulies 2FA150D - SWL 650
Triple block for classic sailboats 2FA150D - SWL 650 La Nantaise de Poulies

Fonctionnalities Triple Hand Strap Optional Becket Optional Rope Specifications Force II blocks are made in order to join together the design features and the highest esthetics...

La Nantaise de Poulies TA60 - SWL 270
Triple block for classic sailboats TA60 - SWL 270 La Nantaise de Poulies

Triple Hand Strap 10mm Fonctionnalities Triple Hand Strap Optional Becket Optional...

La Nantaise de Poulies TA185 - SWL 1700
Triple block for classic sailboats TA185 - SWL 1700 La Nantaise de Poulies

Fonctionnalities Triple Hand Strap Optional Becket Optional Rope Specifications Ash...

La Nantaise de Poulies TCE170 - SWL 1600
Triple block for classic sailboats TCE170 - SWL 1600 La Nantaise de Poulies

Fonctionnalities Triple Hand Swivel Hoock Optional Becket Optional Rope Specifications Ash...

La Nantaise de Poulies TCE300 - SWL 7000
Triple block for classic sailboats TCE300 - SWL 7000 La Nantaise de Poulies

Triple Hand Swivel Hoock 30mm Fonctionnalities Triple Hand Swivel Hoock Optional...

Esprit Yachting
Block for classic sailboats Esprit Yachting

Wooden blocks / Poulies bois par Esprit Yachting...

Esprit Yachting
Double block for classic sailboats Esprit Yachting

Wooden blocks by Esprit Yachting is a complet range of...

Esprit Yachting
Triple block for classic sailboats Esprit Yachting

Wooden blocks / Poulies bois par Esprit Yachting...

Blockmakers Ording  SWIVEL
Block for classic sailboats SWIVEL Blockmakers Ording

Two versions: * Bindings: aluminium-bronze with...

Blockmakers Ording  SNAPSHACKLE
Block for classic sailboats SNAPSHACKLE Blockmakers Ording

Two versions: * Bindings: aluminium-bronze with...

Blockmakers Ording  FRONT
Block for classic sailboats FRONT Blockmakers Ording

BLOCK INTERNAL BINDING WITH FRONT SHACKLE Block delivered WITHOUT shackle Two...

Blockmakers Ording  UPSET
Block for classic sailboats UPSET Blockmakers Ording

One version: * Bindings: aluminium-bronze...

Blockmakers Ording  TWISTED EYE
Block for classic sailboats TWISTED EYE Blockmakers Ording

Two versions: * Bindings: aluminium-bronze with Sheave: aluminium-bronze...

Blockmakers Ording  ON SPRING
Block for classic sailboats ON SPRING Blockmakers Ording

Two versions: * Bindings: aluminium-bronze with...

5 products Sea Sure
Sea Sure 19.84
Sailboat double block with shackle / becket 19.84 Sea Sure

19mm carbon fibre cheeked ball race blocks Light weight, high load carrying capacity blocks Reliable race proven designs High wear resistant cheek material extends life if miss-lead occurs Freewheeling...

Sea Sure 19.78
Sailboat single block with becket 19.78 Sea Sure

Ingle Ball Race Block with becket,19mm 19mm carbon fibre cheeked ball race blocks . Light weight, high load carrying capacity blocks . Reliable race proven designs . High wear resistant cheek material...

Sea Sure 19.86
Sailboat triple block with fixed head 19.86 Sea Sure

Treble Ball Race Block with shackle,19mm 19mm carbon fibre cheeked ball race blocks . Light weight, high load carrying capacity blocks . Reliable race proven designs . High wear resistant cheek material...

Sea Sure 19.89
Sailboat triple block with fixed head / becket / cam-cleat 19.89 Sea Sure

The addition of a triple jammer to the ball race blocks...

Sea Sure 00.21
Sailboat double block with fixed head 00.21 Sea Sure

25mm Double Block with Shackle The high strength to weight ratio and simple construction of the "00" range of blocks gives years of trouble free service. Electro- polished 316 stainless...

1 products TR INOX S.r.l.
3 products Wasi Maritim
2 products ATN
ATN
Sailboat ratchet block ATN

ATN now offers a SnapRatchet block to facilitate the dousing of the ATN spinnaker sleeve. The...

Edson International 620AL SERIES
Sailboat sheave 620AL SERIES Edson International

Edsons Sheaves and Sheave Assemblies are available in Bronze or lightweight Hard Coat Aluminum (see charts for sizes), and are specially...

Edson International 624 SERIES
Sailboat sheave 624 SERIES Edson International

Edsons Sheaves may be the answer in many areas of custom boat building, not...

Edson International 624AL-6ALNB
Sailboat sheave 624AL-6ALNB Edson International

Edsons Sheaves may be the answer in many areas of custom boat building, not...

Edson International 624AL-8ALNB
Sailboat sheave 624AL-8ALNB Edson International

Edsons Sheaves may be the answer in many areas of custom boat building, not...

Edson International 624BR SERIES
Sailboat sheave 624BR SERIES Edson International

Edsons Sheaves may be the answer in many areas of custom boat building, not...

Hall Spars & rigging BLOCK AUTOLOCK
Hook for sailboat halyard BLOCK AUTOLOCK Hall Spars & rigging

Headsail halyards or external reef lines can be easily managed with the Hall BlockLock....

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