AAmstrand Twisted Nylon Dock Line - 1/2" Diameter, Available in 20' to 30' Lengths

The AAmstrand Twisted Nylon Dock Line is a 1/2 inch diameter mooring line built for boaters who need dependable holding power at the dock or on a mooring. Twisted three-strand nylon construction gives this line natural elasticity, letting it stretch under load to absorb the shock of wave action, wind gusts, and boat wakes instead of transferring that strain directly to cleats and hardware. This line is offered in three lengths so you can match it to your boat size, dock configuration, and how much extra scope you want for tide swings or storm conditions.

Specifications

• Brand: AAmstrand
• Material: Nylon
• Construction: Twisted (3-strand)
• Diameter: 1/2 inch
• Lengths: 20 feet, 25 feet, 30 feet

Sizes & Options

All three variants share the same 1/2 inch diameter and twisted nylon construction, so your choice comes down to length. The 20-foot line suits smaller boats or shorter dock runs with minimal scope needed. The 25-foot line is a versatile middle ground for mid-size boats and standard slip setups. The 30-foot line is best for larger boats, longer runs to a piling, or situations with significant tidal range where extra scope keeps the boat secure through changing water levels. As a general rule, bow and stern lines are sized at roughly two-thirds of the boat's length, so measure your boat and dock layout before choosing.