Servicing Type V Personal Flotation Devices (PFDs)

If you’re like a lot of recreational boaters, you may not pay a much attention to your life vest. You might not even know what PFD stands for – Personal Floatation Device. You may have even purchased a type V PFD with your #1 criteria being comfort. You throw it on each time you go out, mainly just to make a show of it, and take it off as soon as you’re outside the marina – confident that you’ll remember to put it back on if the weather picks up.

Anchor Scope Nomograph

How Much Scope to Lay at Anchor

You probably know the rules of thumb. Something like 7:1 scope if you’re staying overnight, 5:1 if you’re just there for a few hours. But where do these rules come from, and what if you can’t lay that much scope – say you’re up against the shore line, or the swing radius is too big. I took an engineering approach to calculate what scope you actually need, depending on the relevant variables.

Using Telltales to Trim Sails

Sail Trim

Sail trim refers to the various means by which the sails are configuration to harness power from the wind. Sheeting Angle As discussed earlier in the section on wind forces, the primary variable used to control the sails is the sheeting angle, which in combination with the boat heading controls Read more…