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What are Common Sizes of Tarred Bankline?

April 5, 2026

Quick Answer

Common sizes of tarred bankline include 3/8 inch, 1/2 inch, and 3/4 inch, and they are often used for securing boats, yachts, and other waterfront structures.

Bankline Sizes and Applications

Tarred bankline, also known as tarred rope or tarred cordage, is a type of marine cordage that is treated with tar to enhance its durability and resistance to water. The most common sizes of tarred bankline are 3/8 inch, 1/2 inch, and 3/4 inch. These sizes are suitable for a variety of applications, including securing boats, yachts, and other waterfront structures, as well as serving as mooring lines for ships and barges.

Choosing the Right Bankline Size

When selecting a tarred bankline, it’s essential to consider the weight and size of the object it will be securing. For example, a 3/8 inch bankline may be sufficient for securing a small sailboat or a kayak, while a 1/2 inch or 3/4 inch bankline may be required for a larger vessel or a heavier load. It’s also crucial to consider the amount of stress and tension the bankline will be subjected to, as excessive stress can cause the cordage to fail.

Preparing Tarred Bankline for Use

Before using a tarred bankline, it’s essential to inspect it for damage or wear. Check for any signs of fraying, cuts, or abrasions, and replace the bankline if necessary. Additionally, make sure to store the bankline in a dry, well-ventilated area to prevent it from drying out or becoming brittle. When using the bankline, apply a thin layer of tar to the ends and any areas that may be subject to wear or stress to ensure maximum durability and resistance to water.

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