Seachoice 42780 Solid Braid 100% MFP Mulit-Purpose Rope Spool, 3/8 in x 500 ft, Blue and White
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The Seachoice 3/8" x 500 Ft. Solid Braid 100% MFP Multi-Purpose Rope Spool is a buoyant polypropylene (MFP) line designed to resist rot and marine growth. The solid braid construction helps the rope stay firm and uniformly round under load, making it a handy bulk option for common boating, dock, and utility line needs.
Key Features
- 100% MFP (Monofilament Polypropylene) construction—buoyant and made for marine use
- Floats—easy to spot and recover if it’s dropped overboard
- Resistant to rot, mildew, and marine growth (polypropylene-based line)
- Solid braid construction—round, firm feel, and clean feeding through hardware/blocks
- Multi-purpose use—ideal for general boating and rigging applications
- Blue and white colorway—high-visibility on the water and easy to identify on deck
- Bulk 500 ft spool—cut to length as needed
Intended Use
- Dock & mooring line applications (where buoyant polypropylene is preferred)
- Anchor line applications (general use/utility—based on your project requirements)
- Tow line / ski rope / safety line uses (based on your vessel and equipment needs)
- Utility rigging and general purpose line use
Product Details
- Brand: Seachoice
- Product type: Multi-purpose rope spool
- Part Number: 50-42780
- Construction: Solid braid
- Material: 100% MFP (Monofilament Polypropylene)
- Diameter: 3/8 in (9.5 mm)
- Length: 500 ft (152.4 m)
- Color: Blue and White
- Weight (variant data): 25.0 lb (11.34 kg)
- Package/quantity: 1 spool (variant context: single unit)
Parts Desk Insights
Best Use Case: Choose this MFP solid braid polypropylene spool when you want a floating, rot- and marine-growth-resistant rope in a mid-size diameter for general boating, tow/safety-style uses, and everyday dock/rigging tasks.
Common Issues: As with any rope, inspect for wear at contact points (cleats, fairleads, blocks) and check for stiffness or abrasion over time. If the rope is intended for dock-mooring shock loads, confirm the required stretch/ride characteristics for your setup before using polypropylene as the primary dock line.
Related Products & Accessories
- Browse Dock & Mooring Lines - Match rope diameter and intended line type to your docking/mooring setup.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.