Ask Sail

I have a 1968 Bristol, and the mainsheet block is fastened to the boom with a swivel on a threaded bolt that fits into the boom end-fitting, which also serves as the attachment point for the outhaul. I cannot find a replacement for the fitting anywhere, and it is showing its age. Any ideas on where to look?

Will adding a flattening agent to a glossy two-part topside paint make it much less slippery? I would prefer not to add an abrasive antiskid medium to the paint.

I sail an S2 8.7 with a Yanmar 2GM engine. When sailing, should the prop be locked or should I let it freewheel? If I should lock it, is it better to put the transmission in forward or reverse?

My question is this: what effect will diesel have on the blue desiccant beads in the H2Out? Is there some change I should make to the air vent?

Thanks to a number of maintenance errors made by its previous owner, my sailboat smells of diesel fuel. I have cleaned the bilge and corrected the maintenance issues, but the smell still lingers. What do you recommend to get rid of it?

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?

After hull integrity, rudder integrity is the most vital component of a seaworthy vessel, yet most sailors pay more attention to LED lighting or smartphone apps than they do to their boat’s rudder. Before you shrug off rudder failure as a remote concern, consider that the incidence of mid-ocean rudder failures is close to 1 percent.

I have to replace my depthsounder. The plastic nut that holds the old transducer in place was set in the hull with adhesive. The new transducer will not fit the old nut, which has proven very difficult to remove.

Tutorials about electrical systems and multimeters often involve theoretical analogies to flowing water. In these primers, the authors test well-designed, functioning circuits, and everything behaves exactly as anticipated.

When I turned on my recently installed chartplotter, I got a “low voltage” message. Using a digital voltmeter, I measured 9.7 volts at the circuit breaker on the load side. Voltage on the battery side was 12.5 volts.