6/21/2010 – Keeping track of scope

Pay attention because there will be a quiz.

Scope is the amount of anchor rode that’s been deployed. The basic rule of thumb is that scope should be about 7 times the depth of the water where you’re anchoring. At least that’s the number when you use primarily nylon rode. With chain the scope is often reduced to 5:1. But regardless of which ratio one uses, you can’t do jack unless you know how much rode you have out.

Today, I finally got around to marking the rode on 3 of our 4 anchors. The spare anchor under the v-berth will just have to wait until I have some reason to pull it out of storage,

There are ongoing discussions about the best way to mark chains and nylon lines. Some swear by paint, some by tying colored rags at particular intervals, usually with some arcane code to decipher what the rags are telling you. Lately I’ve read a lot of opinions about using colored nylon wire ties. On our old boat, the previous owner had used commercially-available markers with actual numbers written on them. I decided to go for a combination of a couple of strategies.

For the chain, I opted for the wire ties. I used red for 10′, green for 50′ and yellow for 100′.

For the nylon I used the numbered markers. In this photo I used a combination of both:

Question #1: How much scope is represented in the above photo?
a.) 60′
b.) 10 fathoms
c.) 160′
d.) 260′
e.) Scope? I ain’t got to show you no steenkeeng scope!

Question #2: How much rode has been deployed if the following marker shows up?
a.) 135′
b.) 180′
c.) 30 fathoms
d.) 165′
e.) Rode? If you mean chain, say chain!

You’ve probably noticed that I’ve left the tails long on the wire ties. The internet brain trust assures me that this won’t interfere with the windlass and, it appears that they’re right. This is nice because the cut-off tails are notoriously sharp.

Bonus question: In the above photo, if you let this marker reach the surface of the water, assuming that you are using the correct amount of scope, what is the maximum depth of the water that you’re anchoring in?
a.) 26′
b.) 19′
c.) 43′
d.) 29′
e.) The what?


About sryoder

Steve & Lulu... retired. Had enough of the cold wet dreary fall/winter/spring in the Pacific Northwest. Bought a boat, fixed it up, sold our home and sailed to Mexico in November, 2010. Been here ever since except for occasional forays to the States (summer only, thank you) to visit the kids, parents and siblings. If you're looking for a sailing blog, this is the wrong place. This is a traveling, hunkering in, eating blog. Sailing is just how we get from place to place when we can't walk.
This entry was posted in Uncategorized. Bookmark the permalink.

2 Responses to 6/21/2010 – Keeping track of scope

  1. Anonymous says:

    If it was a really hot day when one was furling out the "rode", how many beers would it take to do the job?1. 12. 23. 3Answer belowIf depends on… who is letting out the rode and who is sitting on their butt and how long of a journey the beer ad to take to get boatside. The longer the carry… the less one drinks. And lastly …it will take fewer beers if lulu is in the galley fixin up somthin real good!!!!!!

  2. Anonymous says:

    p.s. 1 c 1602 b 180 and for the bonus question a 26 now bring on the beer!!!!!!!!!!!!!!!!!!!

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s