Ask Sail: Boom Raising

I have a 30-foot C&C. The boom on this boat is too low for a standard vang; instead it has to be rigged to the toerail. The mast has a female internal track that receives round slugs. I’ve lived with the rig, but it is growing old. Can I raise up the boom with this type of mast track to make room for a vang?
Author:
Updated:
Original:

Dan Smith of Port Wing, Wisconsin asks:

I have a 30-foot C&C. The boom on this boat is too low for a standard vang; instead it has to be rigged to the toerail. The mast has a female internal track that receives round slugs. I’ve lived with the rig, but it is growing old. Can I raise up the boom with this type of mast track to make room for a vang?

Win Fowler replies:

I don’t remember the exact configuration of the C&C 30 gooseneck attachment, but it is likely held in place by rivets or machine screws. Provided you can remove these, you should be able to reposition the attachment and drill and tap new machine screws to hold it in place. You should fill the old holes with short machine screws to be sure there is sufficient support for the compression load on that part of the mast, which will increase with the new vang. Depending on how high you raise the boom, you may also need to raise the gate for feeding in the luff slides. And, of course, you’ll need to have the mainsail shortened, taking care to preserve the thread line from head to clew.

WinFowler

I’d be more concerned about where the new vang attaches to the mast (or possibly the mast collar at the deck). This attachment will typically be under more load than the gooseneck, and the load will be up and aft. If attached to the mast, the vang fitting should extend around the mast far enough that its fasteners are loaded mostly in shear. The vang fitting on the boom should provide a good example. If the vang leads to the mast collar, this should be fixed to the mast so that the load does not lift the deck.

Related

GMR19_F53_0539

Boat Review: Beneteau First Yacht 53

Luxury performance-cruising isn’t entirely new. You can go fast and still be comfortable. You can even race if you make the right tradeoffs—or so says Groupe Beneteau, which recently launched its First Yacht 53, in the process also reinventing the company’s “First” brand. ...read more

BirdonBoard

Cruising: Birds of a Feather

One of the neatest things about sailing offshore is the other lifeforms we encounter. We smile when we see flying fish skimming over the surface of the sea. We cheer when dolphins leap and dance in our bow waves. We are duly reverent when mighty whales sound and spout, and ...read more

pirate-marlin-logo

Pirate’s Cove Billfish Tournament

This Spring has felt a bit like a slow day of fishing but it’s almost time to time to Bait…and Switch. The Pirate’s Cove Billfish Tournaments offer something for every member of your crew. Exceptional fishing, fun times with family, old friends and new. Our run is short, our ...read more

Tusk.00_00_16_21.Still001

Tusk by Spyderco

Spyderco's Tusk knife combines a blade and marlinspike to create a multitool perfect for marine use. Made with corrosion resistant materials like titanium and LC200N steel, a nitrogen alloyed steel, and Spyderco-exclusive locking mechanisms, this knife is one of the toughest ...read more

IY11.98_fTaccola©DJI_0200

Italia 11.98 Performance-cruiser

This past winter, SAIL principal editor, Adam Cort, check out the new Italia Yachts’ new 11.98 performance-cruiser at the boot Dusseldorf show in German, and says he can attest to the fact it’s a boat more than worthy of the attention of North American sailors. Available in ...read more

01-LEAD-2017_IDALEWIS_0219

Racing: Doublehanded

I was born in 1955, and although I was a tad young to actually follow the first Observer Single-Handed Transatlantic Race, I grew up in the age of the pioneers of solo offshore sailing—Francis Chichester, Robin Knox-Johnson, Alec Rose, all Knighted for their singlehanded ...read more

newport-400c-updated

Spectra Watermakers

The world's quietest and most energy-efficient watermakers. Our product line ranges from hand operated desalinators that can make 6 gallons a day to our largest system that produces 20,000 gallons of fresh, potable water per day. Spectra Watermakers has the complete package: ...read more

CAPE-COD---Under-sails

Boat Review: Cape Cod

The concept of “daysailer” has grown ever broader over the years. These days the label can be pasted on a boat as small and simple as a Sunfish, as fancy as a 40-footer with a nice big cockpit and plenty of brightwork, or any number of concoctions in between. This Cape Cod ...read more