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Laser Mainsheet Blocks

ILCA Laser Harken Block Set

ILCA Laser Harken Block Set

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ILCA Laser Blue Becket Block Kit

ILCA Laser Harken Traveler Block

ILCA Laser Harken Traveler Block

ILCA Laser Harken Boom Block,

ILCA Laser Harken Boom Block,

ILCA Laser Blue Boom Block

ILCA Laser Blue Boom Block

Ronstan Series 55 RT Orbit Block, Single Swivel Head

Ronstan Series 55 RT Orbit Block, Single Swivel Head

WinDesign Traveler block with sister hook

WinDesign Traveler block with sister hook

WinDesign Block with becket for mainsheet (OPTEX2154)

WinDesign Block with becket for mainsheet

WinDesign Block with sister hook for mainsheet

WinDesign Block with sister hook for mainsheet

WinDesign Block, mainsheet

WinDesign Block, mainsheet

  • Laser Parts
38.25 USD 30.0 USD 44.050000000000004 USD 210.0 USD
229.5 USD 115.0 USD 374.0 USD 67.4 USD
54.1 USD 109.5 USD 21.75 USD 44.050000000000004 USD
22.2 USD 19.35 USD 16.15 USD 18.7 USD
39.0 USD 58.0 USD 69.0 USD 22.0 USD

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Blocks - Cleats

Sailcenter offers a range of Laser classic mainsheet blocks and a range of Laser xd mainsheet blocks, all blocks in stock.

Mainsheet

Harken 29 mm carbo block with bolt

Fits ILCA and Laser block plate

Harken 16 mm airblock

  • Series: Harken 16 mm Block

16 mm airblock

  • Maximum line diameter 5 mm

Harken 57 mm Carbo automatic ratchet block

Harken 18 mm carbo t2 block.

  • Series : T2 Soft-Attach Carbo Block
  • 18 mm Carbo T2 block

Harken dinghy clew hook with 16 mm air block

  • Series: Harken Accessories
  • Clew hook including Harken 404 block

ILCA 4 - Laser 4.7 outhaul Harken 29 mm

  • Complete incl Harken T2 Carbo block

Ready to sail, ropes in the right length

  • For Laser 4.7

Harken 29 mm Carbo T2 block

  • 29 mm Soft-Attach Block
  • Maximum line diameter 8 mm

Ronstan 4.8 mm halyard shackle

  • Used in Laser outhaul system in combination with Harken 16 mm airblock

Allen eye strap for boom block

Allen 30 mm extreme high load block with key curved.

Extreme high load dynamic bearings tailored for Laser/ILCA dinghy vang

Effortless vang control and streamlined design

Ensures durability and efficiency

Harken 57 mm Carbo ratchet block

  • Series: Harken Ratchet Carbo Block
  • 57 mm Ratchet Block - Swivel
  • Maximum line diameter 10 mm

Harken 16 mm airblock with becket

  • 16 mm airblock with becket

Harken 16 mm forkhead block

  • 16 mm forkhead block

Laser vang handle

  • Ideal to pull really hard on the vang
  • Prevents the vang rope cutting your hand

ILCA - Laser cunningham double block Harken 29 mm

Two 29 mm Harken blocks for more power

For all ILCA and Laser sails

Laser clew hook with block

Laser clew strap.

  • Easy to fit and slips great along the boom
  • Holds the sail clew in place with velcro

Official class legal Laser sailboat part

Harken 25 mm forkhead wire block with becket

  • Series: Harken High Strength Blocks
  • 25 mm forkhead wire block with becket
  • Maximum line diameter 4 mm

Allen 50 mm ratchet block

Harken micro carbo cam cleat.

Series: Harken Micro Cam Cleat

Minimum line diameter 2 mm

Maximum line diameter 6 mm

Harken micro bullseye fairlead 19 mm

Harken micro cam cleat aluminium, ilca - laser vang key curved.

New and stronger kicker key (thicker)

Connects to the upper boom vang block

Harken 16 mm double airblock with becket

  • 16 mm double airblock with becket
  • Cunningham 17
  • Hiking strap 1
  • Mainsheet 15
  • Traveller 5

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Laser Sailing Tips

Mainsheet rope specs

This rope is usually ~14m, 46ft in length, and made from 6-8mm, ¼-5/16 inch rope for easy handling.

While out on the water it is advisable to tie a figure 8 knot in both ends of the mainsheet rope. At the boom end, this is so that the mainsheet can be pulled fully on so that it is in the block-to-block position. At the other end so that it doesn’t pull through the mainsheet block in the center of the cockpit.

Previous: Laser Tiller and Tiller Extension

Next: Traveler

' src=

In above picture of mainsheet, boom and traveller, isnt the knot on the wrong side of the block ?

' src=

Hi Rob Nice pick-up. Yeah, it’s better to have the knot on the other side. Old photo – will have to update it. cheers

' src=

Hello! Love your website, keep it going!

Have you got any tips on what to do with the mainsheet so that it doesn’t get caught on your feet or on the hiking strap?

Hey Antony Thanks for your kind words! I think we all have that issue from time to time. I try to tidy up when on a downwind run. Bit hard to do when you are going upwind and hiking, but when sailing downwind it can be a good time to get things organized in the cockpit. Maybe some other readers can offer their advice?? cheers Brendan

' src=

I have a question about the main sheet cleat and block. I just got my Laser and it came with a funny cleat attach to the block. The block has a one way option but the way the cleat is mounted to the block its very hard to use. What angle should the cleat be at relative to the main sail going around the block. I upgraded from a sunfish and it’s block was mounted to the hull and did not flop around like this one does.

Hi John Thanks for your question. It’s a bit hard to know exactly the type that you have. The one I sail with does not have the cleat attached to the block – rather it has a ratchet block with side-deck cleats. The block is held in a vertical position using a spring at the base. This way, the block does not fall over, and the mainsheet comes out and into the cleats mounted on the deck at a nice angle. This seems to work well, so if you don’t have this setup, you might want to change it out. Cheers Brendan

' src=

Hello, I was wondering if you knew how the laser mainsheet block is held in place from inside the hull?

thanks, nick

Hi Nick I have not had the need to unscrew the mainsheet block/hiking strap attachment, so I’m not 100% sure how it is attached underneath the deck. Some people think that the screws are simply screwed into the deck as the fibreglass is quite thick here. Others think that there is an aluminum backing plate that the screws screw into to provide the extra strength needed. Please have a look at this thread for some more information. All the best.

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  It's no secret that many of the world's top sailors perfected their skills in the Laser. With over 170,000 boats constructed to date, the Laser is the gold standard in single-handed, one-design sailing. The Laser, designed by Bruce Kirby, was built on the philosophy that the sailor wins the race, not the boat. Every Laser in the world is identical. Laser racing is a true test of skill.

 
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ILCA / Laser Spliced Pro Harken Deck Blocks

$ 60.00 Original price was: $60.00. $ 50.00 Current price is: $50.00.

A Pair of Pro Spliced Harken Deck Blocks for the Laser®

Harken T-18 blocks and New England Ropes 2mm spliced loops

Description

These blocks attach without knots (luggage tag) and the seamless spliced loops are stronger than knots

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Harken T2 Soft Attach Carbo Air Blocks

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Laser Harken Blocks

Laser Harken Blocks

December 02, 2017 1 min read

Harken Blocks for a Laser

The International Laser sailing dinghy is one of the most popular single handlers in history and is also an Olympic sailing class for both men and women. Two different rigs are used for the two different events.

The Laser has a strict one-design policy and the boat has changed little since the original 1971 design.

In this article we look at the  Harken blocks   which can be used on the boats to give you a competitive edge on the water.

Below is a diagram which shows all of the Harken block part numbers for the boat. All of these are in stock and available at Sailing Chandlery.

Laser Harken Blocks

Blocks used on the Laser

For easy navigation across our website we have linked to each of the products used on the Laser.

  • 2698 -  T18 - 18mm Carbo Air Block
  • 2158 -  T18 - 18mm Double Carbo Air Block
  • 376 -  16mm Forkhead Block
  • 466 -  25mm Forkhead Wire Block with Becket
  • 468 -  Harken Micro Cam-Matic Cleat
  • 2135 -  57mm Carbo Ratchet Block

Although made by Harken, some products are only available through Laser Performance or official Laser dealers.

If you are looking for other accessories or ropes then check out our  Laser   page, or  Laser rope lengths   page. We're also a Laser Performance authorised dealer so are perfectly placed to make the best recommendations.

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Used 2 of these to replace the little plastic ones on a supernova tiller. Much better and now pull in the right direction

This is the perfect tool to assist in tightening my Dart Trampoline. It grips the rope far better than you can with your hands.

After having my Previous Superwarm X Suit for over 5 years whilst working as a watersports instructor this is a great improvement over the previous suit. Warmer and softer linning throughout the inside of the suit and I will continue to use the suit all year round like my old suit.

Someone at the club “borrowed “ one of my Solo’s bungs. I bought two so now I have a spare.

Great to have something that goes over everything if a quick solution is required

had ordered one on amazon before, received the wrong size received the correct size now :)

A simple moulded part of good quality, supplied quickly and well packed.

Turned out that I had ordered the wrong make, my camcleats being Allen not Harken, however by drilling the two fixings holes out by 1mm and filing two small notches they fitted perfectly.

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Devoti ILCA 7 Composite Top Mast - Race Competition Rig

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ILCA 4 Laser Dinghy by Ovingtons - Composite Top Mast

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Lewmar 48AST Two Speed Self-Tailing Winch - Aluminium

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Ewincher 2 Electric Winch Handle

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Lewmar VX1L GO 8006/7mm 1/4” Extended Windlass Kit

Lewmar VX1L GO 8006/7mm 1/4” Extended Windlass Kit

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Harken Carbon V 1.5T Block 3294 - 47mm

Lewmar VX1 GO Deck Unit 6/7MM st/st 500w Windlass Extended Kit

Lewmar VX1 GO Deck Unit 6/7MM st/st 500w Extended Windlass Kit

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Laser Performance Rigged Vago Mast

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Lewmar 40ST EVO® Winch - Alloy Grey

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Harken Two-Speed Mainsheet Self-Contained Tune System 383 - 4:1/8:1

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ILCA 6 Laser Lower Mast Section - Composite

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Lewmar V700 Vertical Windlass With Dual Chain Gypsy Kit

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Harken System A CB Headboard Car Assembly 3811 - 22mm

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Laser 420 Centreboard

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Guide to Laser Sail and Rig Sizes

banner-laser-page-img.jpg

Over 200,000 Laser sailboats have been built over the last 40 years, more than most other small dinghy sailboats. In this article we are going to answer one of the most common questions we get: What size rig do I have?  This will help answer what size sail and/or rig you already have and what size sail and/or rig you need to purchase to update your Laser. 

What size rig / sail do I have? Standard vs. Radial vs 4.7 Explained

The Laser sailboat has had a number of different rig sizes, with the intention of making the boat sailable by a wide range of sailors (and different sailor weights) by simply swapping out the lower mast section and sail while keeping all other components the same. There are currently three different rig sizes and they are commonly referred to as 'Standard', 'Radial' and '4.7'. Below you will find an image that shows the three rigs side by side, and in the following section we'll explain each one.

laser-rigs.jpg

Laser Standard / MK2 / ILCA 7

This is the most common Laser rig size, and the original rig on the boat when it was designed. It features a 7.06 square meter sail (about 76 square feet). In 2018, the Laser Class approved a new 'Standard' sail, which is referred to as the 'MKII' or 'Mark 2' to distinguish it from the first version. The difference, among other things, is in the panels. The original 'Standard' sail featured horizontal cut panels. The new MkII sail has radial cut panels. There is no difference in size between these two versions, and as of 2020 all new Laser Standard sails are available in this updated cut.  

measurement-diagram-std-sail-mastlower-791x1024.jpg

How to tell if you have a 'Standard' sail:  The first and most obvious way to tell if you have a 'Standard' sail is to look at the panels. If they are horizontal, it is most likely a standard sail. Next, you can measure the luff (the front edge of the sail along the mast sleeve). This measurement should be about 5130 mm or 200 inches  from the top of the sail to the bottom.

How to tell if you have a 'Standard' lower mast section:  The 'Standard' lower mast section should measure about 2865 mm or 113 inches . It is a fairly stout mast section compared to the two smaller mast sections. 

Laser Radial / ILCA 6

Originally called the 'M' rig when first designed, the Laser 'Radial' sail is smaller than the 'Standard' sail at 5.76 square meters (62 square feet). At the time, it was the only Laser sail to feature the radial cut panels, which allowed the sail to be de-powered more easily in bigh winds. Per the notes about the 'Standard' rig above, both the Standard and Radial sail feature the radial cut design. Another typical indicator of a Radial size sail are the blue panels at the tack and clew of the sail.

measurement-diagram-rdl-sail-mastlower-791x1024.jpg

How to tell if you have a 'Radial' sail:  The first and most obvious way to tell if you have a 'Standard' sail is to look at the panels. If they are radial, as in emanating out from the center, it is most likely a radial sail. Next, you can measure the luff (the front edge of the sail along the mast sleeve). This measurement should be about 4560 mm or 180 inches  from the top of the sail to the bottom.

How to tell if you have a 'Radial' lower mast section:  The 'Radial' lower mast section should measure about  2262 mm or 89 inches . It is also a bit smaller in diameter than the standard section. 

Laser 4.7 / ILCA 5

The Laser 4.7 (or ILCA 5) is the smallest of the three Laser sails and was designed for young sailors just getting into Laser sailing. The 4.7 lower mast section is also different from the others in that is has a pre-bend near the boom fitting, allowing the sail to depower much easier. This is the least common Laser sail size, and if you have an old one around, chances are it is not a 4.7 sail.

measurment-diagram-47-sail-laser.png

How to tell if you have a '4.7' sail:  The 4.7 is similar to the old 'Standard' sail as it has cross cut panels. Many 4.7 sails also have an obvious 4.7 logo somewhere on the cloth. Next, you can measure the luff (the front edge of the sail along the mast sleeve). This measurement should be about  4080 mm or 160 inches  from the top of the sail to the bottom.

How to tell if you have a '4.7' lower mast section:  The '4.7 lower mast section has a pre-bend in it and should measure about 1810 mm or 71 inches . The bend is the easiest way to tell it apart from the others. 

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IMAGES

  1. Laser Sailboat Mainsheet

    laser sailboat blocks

  2. 91627 PLASTIC BLOCK WITH BECKET

    laser sailboat blocks

  3. 91627 PLASTIC BLOCK WITH BECKET

    laser sailboat blocks

  4. Rigging a Laser Sailboat: How To Rig & Launch a Laser Dinghy

    laser sailboat blocks

  5. Rigging a Laser Sailboat: How To Rig & Launch a Laser Dinghy

    laser sailboat blocks

  6. Laser Sailboat Diagrams in 2021

    laser sailboat blocks

VIDEO

  1. RC Laser Sailboat is a blast to sail

  2. Laser sailboat launch

  3. Laser Restoration Part 5

  4. laser sailboat repair

  5. Rudderless Sailing in a Laser, just messing around in boats

  6. Stormy Sailboat Race (RC Laser)

COMMENTS

  1. Laser Sailboat Upgrades & Restoration Guide and Advice

    Laser Outhaul / Cunningham Upgrade - This kit includes everything from the blocks, cleats, hardware, line, blocks and instructions to fully update an older Laser to the latest outhaul and cunningham controls. This is the easiest way to upgrade your boat, though you will need a few basic tools to remove the old hardware from the deck and install ...

  2. One Design Laser Mainsheet Blocks

    Buy online One Design Laser Sailboat Mainsheet Blocks at the best price. Technical support at Vela Sailing Store. A committed team of sailors offering the best customer service, sailing gear and parts. Free shipping. Discounted Laser sailboat parts, pulleys and blocks.

  3. ILCA / Laser Sailboat Parts, Sails, Upgrades, & Accessories

    Boom Vang Rigging - Upgraded 16:1 vang and components, vang blocks, and precut line for Laser boom vang assemblies; Covers and Bags - Protect your Laser with a deck cover, hull cover, spar bag, or blade bag; Dollies and Trailers - Transportation solutions for your Laser sailboat; Practice Parts - Generic fittings that will fit any existing ...

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    The Boat Locker has the best blocks for your Laser sailboat. Free shipping on orders over $100. ... The Boat Locker has the best blocks for your Laser sailboat. Free shipping on orders over $100. Check us out! Order by 3:00 ET for same day shipping. 0. My Cart; 0. Wishlist; Sign in ...

  5. LASER PERFORMANCE Laser Traveler Blocks

    Description. Replace your old 1970s-era mainsheet/traveler block set with a lighter, stronger and more reliable Harken system. At last, Harken ball bearing blocks for your Laser's mainsheet system! Larger, upper traveler block features ball bearings for rapid trims and quick eases on the sheet as you round the top mark.

  6. Laser / ILCA Sailboat Boom Vang & Rigging

    This is the current vang set up found on most modern Laser / ILCA sailboats, offering a powerful 16:1 cascade system. It features a vang base unit, double block with becket in the center, and a vang block with key at the top end, using a length of 4mm or 5mm control line with a Dyneema/Spectra primary line. Classic / 3:1 Boom Vang System

  7. How to Build a Laser 6-1 Outhaul System

    Step 1. Clew Block. The first part of the Outhaul System is going to be the clew block and hook. There are lots of different ways that people rig this. We will do it per the instructions you receive with a new boat. Take one of the 18mm blocks, the clew hook and one length of the 3mm race rope. Tie a stopper knot in one end of the line and ...

  8. Rigging a Laser Sailboat: How To Rig & Launch a Laser Dinghy

    With the mast in place, slot the boom into the mast, and tie off the outhaul to the sail clew using a bowline, as shown in the knots section. Then attach the clew tie-down, making sure to tie it underneath the outhaul. Close-up of laser clew tie-down and outhaul. Attach the vang and cunningham. Tie a small loop in the end of the cunningham and ...

  9. Blocks

    ILCA 4 - Laser 4.7 outhaul Harken 29 mm. Complete incl Harken T2 Carbo block. Ready to sail, ropes in the right length. For Laser 4.7. €38.50. Add to cart. Outhaul.

  10. Top 16 Laser Sailboat Accessories

    13. Laser Dolly. Haul your boat to and from the water by yourself with ease using a specially designed Laser Dolly. The Dolly supports should fit snuggly which protects the gunwale gel coat. Made from aluminum, Dollies are both lightweight and strong and one of the most important of sailboat accessories.

  11. Laser Sailboat Mainsheet

    Laser mainsheet, block, and cleats in the cockpit. Mainsheet rope specs. This rope is usually ~14m, 46ft in length, and made from 6-8mm, ¼-5/16 inch rope for easy handling. ... What angle should the cleat be at relative to the main sail going around the block. I upgraded from a sunfish and it's block was mounted to the hull and did not flop ...

  12. Laser Sailing Direct

    Laser Sailing Direct offers a complete line of Laser hardware, parts and supplies for the Laser sailboat. One source for all of your Laser sales, parts and supplies. - New Main Sheet & Traveler Blocks Approved. TOAD Marine Supply 430 W 23rd Street Holland, Mi 49423 Phone: 616-820-0022 FAX: 616-396-1136

  13. ILCA/Laser Fit Out Guide from Allen Brothers

    A..71M - Lower mast-mounted Aerovane. MP2382 - Laser sail batten endcap (Outer). MP2383 - Laser sail batten endcap (Inner). If you require any more advice on fitting an ILCA/Laser or are looking for any specific parts please get in contact with the Allen sales team - [email protected] - +441621 774689.

  14. Top Laser Sailboat Racing Upgrades

    Oct 12th 2016 West Coast Sailing. Go faster with these upgrades for your Laser sailboat, including wind indicators, carbon tillers and extensions, clew straps, blocks, quick-pins, and more. In this post we provide an update to the popular upgrades video we posted last Summer, featuring our very own George Yioulos explaining the benefits of ...

  15. Cunningham/Outhaul & Vang Upgrades For the Laser®

    Nautos Double Cam Cleat w/Base for ILCA/Laser® $36.00: Complete Double Padeye for ILCA/Laser® including Allen Ball Bearing Blocks $38.00: 10 Pack of Stainless Steel Screws for the Laser® $2.99: Ronstan T Cam Cleat- Great for Main Sheet on Laser® Price: $30.18 Sale price: $25.65: Allen/Nautos ILCA/Laser Turbo Powerpack for outhaul and ...

  16. ILCA / Laser Spliced Pro Harken Deck Blocks

    Description. A Pair of Pro Spliced Harken Deck Blocks for the Laser® Harken T-18 blocks and New England Ropes 2mm spliced loops. These blocks attach without knots (luggage tag) and the seamless spliced loops are stronger than knots

  17. LASER PERFORMANCE Sailboat Blocks

    Shop the best selection of LASER PERFORMANCE Sailboat Blocks from West Marine. Visit for products, prices, deals and more! 6LchHDMbAAAAAGPRKfV4mVX9FPM_gdroO62T7nWA

  18. Laser 8:1 Downhaul System

    The Laser class rules allow a maximum purchase on the downhaul system to be 8:1 and many sailors started beefing up their systems by adding another block. This trend has swept across the Laser standard world over the past year with almost every single top sailor in the world using this 8:1 downhaul. Here we will take a look at my version of the ...

  19. Laser Harken Blocks

    Blocks used on the Laser. For easy navigation across our website we have linked to each of the products used on the Laser. 2698 - T18 - 18mm Carbo Air Block. 2158 - T18 - 18mm Double Carbo Air Block. 376 - 16mm Forkhead Block. 466 - 25mm Forkhead Wire Block with Becket. 468 - Harken Micro Cam-Matic Cleat. 2135 - 57mm Carbo Ratchet Block.

  20. Laser Parts

    I have some new and used Laser sailboat parts for sale. Blocks, goosenecks, vang bracket, bailer parts, bow eye, mainsheet hangers, battens, cam cleats, hiking strap, boom vang blocks and cleats, traveler blocks, fairleads, mast bases and collars, deck cover. Some items not in photos. Inquire on...

  21. Laser & ILCA Hull and Deck Parts

    Laser Sailboat & ILCA Dinghy Hull & Deck Parts. Parts for your Laser and ILCA dinghy hull and deck including autobailers, Laser deck cleats, Laser vang upgrades, gudgeons, drain plugs, grab rails, Laser hiking straps, racing upgrades and more. ... The deck blocks plate is mounted just aft of the ILCA mast step and is a mounting point for two ...

  22. Laser Boats

    Laser 420 Centreboard. Laser boats & parts, sailing blocks & pulleys, dinghy parts, sails, spars, rigging and sailboat parts and equipment. We offer expert advice and service. CH Marine is the official Laser supplier for Ireland and Northern Ireland.

  23. Laser Sailboat Sail and Rig Sizes

    Laser Standard / MK2 / ILCA 7. This is the most common Laser rig size, and the original rig on the boat when it was designed. It features a 7.06 square meter sail (about 76 square feet). In 2018, the Laser Class approved a new 'Standard' sail, which is referred to as the 'MKII' or 'Mark 2' to distinguish it from the first version.