Day ShapesOn a recent trip to Spain, my husband and I took a boat tour on the Ria de Bilbao. Along the narrow river we passed a large commercial-looking ship and I noticed day shapes (a pattern of shapes that indicate a vessel’s current status or activity to other nearby ships during the daytime) hanging from the rigging, but I didn’t know what they signified.  I have never noticed the placement of these shapes on ships before, but in passing so closely to this ship, I had the opportunity to really see every detail.

Do you know what this configuration of “shapes” means?  In this case, the shapes are a circle, triangle, circle.

When I got home I looked up the meaning of these shapes by scrolling to the image of “circle, triangle, circle” on the Weems & Plath LIGHTRule.  The LIGHTRule is a handy reference tool that helps you identify lights at night and also identifies day shapes on boats.

Once I found the right pattern, I read the following in the Vessel Definition magnifier, “Vessel Restricted in Ability to Maneuver.”

Check out this video to learn how you can use the Weems & Plath LIGHTRule.

Written by Cathie Trogdon

Posted by blognewsweemsplath

At Weems & Plath, we take great pride in manufacturing time-tested nautical instruments for safe and enjoyable boating. Since 1928 we have successfully navigated the waters of changing times by keeping our customers at the forefront of thought. Our longevity is due to our commitment to you as we provide top quality products with exceptional warranties to back them up.

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