White Double Braid, 3/8" x 600'

600 Feet of Double Braid Nylon. The Classic White Dock Line in Bulk.

The Seachoice 3/8" x 600 Ft. White Double Braid Nylon Rope Spool is the same premium double braid nylon construction as the navy and black versions — in white, the most popular and widely recognized dock line color in recreational boating. White dock lines are the default choice at most marinas, making this spool the go-to bulk supply for marina operators, boatyards, and boaters who want their lines to match the standard.

High-grade nylon double braid delivers the shock absorption, kink resistance, and long-term durability that dock and mooring lines demand. The braided core inside a braided cover construction is stronger and more flexible than twisted rope of the same diameter, and nylon’s elasticity absorbs the surge loads that would otherwise stress cleats, dock hardware, and the vessel’s hull fittings.

Key Features

• Double Braid Construction — Braided core inside a braided cover for superior strength, flexibility, and kink resistance vs. twisted rope
• High-Grade Nylon — Excellent shock load absorption; stretches under load to protect vessel and dock hardware
• Long-Wearing — Durable construction resists abrasion and maintains strength over extended use
• Kink Resistant — Double braid lay resists kinking and hockling for clean coiling and deployment
• Versatile Application — Suitable for dock lines, anchor lines, mooring lines, and general marine rigging
• 600-Foot Bulk Spool — Cut to any length needed; enough for a full season’s worth of dock lines or a complete marina inventory
• White — The most popular dock line color; universally recognized, clean appearance, and easy to inspect for wear and staining

Specifications

• Brand: Seachoice
• Construction: Double Braid
• Material: High-Grade Nylon
• Diameter: 3/8" (9.5mm)
• Length: 600 ft (182.9m)
• Color: White
• Weight: 11.1 kg (24.5 lb)
• Part Number: 50-47000

For marina operators, boatyards, and boaters who want the standard dock line color in a premium bulk format, the Seachoice 3/8" white double braid spool is the practical, professional choice.

⚓ Parts Desk Insight

• White is the marina standard — and shows wear clearly: White dock lines are the most common choice at recreational marinas, which makes matching easy when replacing individual lines. The trade-off is that white shows staining, rust marks, and algae more visibly than navy or black — which can actually be an advantage for inspection, as wear and contamination are easier to spot.
• Same rope as the navy and black versions: The white, navy, and black 3/8" x 600’ spools are the same construction and material. Color is the only difference. Customers choosing between them should base the decision on aesthetics and their marina’s color convention.
• Bulk spool — cut and finish ends properly: This is a 600-foot spool, not pre-cut dock lines. Heat-seal, whip, or splice cut ends to prevent unraveling. Nylon melts cleanly with a lighter or heat gun for a quick field finish.
• 3/8" suits most mid-size vessels: Appropriate for dock lines on vessels in the 25–40 foot range. Step up to 1/2" for larger boats or high-load applications; consider 5/16" or 1/4" for smaller vessels.