Project 31 Princess Boat Cover Guide: Sizes, Materials & Prices

Introduction: Why Your Project 31 Princess Deserves a Bespoke Cover

Welcome, Project 31 Princess owners, to the definitive guide for selecting the perfect boat cover to protect your cherished vessel. Your Project 31 Princess, a classic 31ft cruiser with a generous 10ft 6in beam, is a familiar sight gracing the serene waters of the Thames, the picturesque Norfolk Broads, and the historic Grand Union Canal. Protecting such an iconic craft from the elements is paramount, ensuring its longevity and maintaining its pristine condition. A bespoke cover is not just an accessory; it's an essential investment tailored precisely to your boat's unique dimensions and form. Here at UK Boat Covers, we understand the specific needs of your Project 31 Princess. For a custom-made cover, pricing starts from £1,309 for durable PVC fabric, or from £1,419 for premium Acrylic, offering exceptional value and protection.

Why Choose a Bespoke Cover for the Project 31 Princess?

The Project 31 Princess, with its distinctive hull shape, specific deck layout, and considerable 10ft 6in beam, demands a cover that fits like a second skin. Universal or off-the-shelf covers simply cannot offer the comprehensive protection and aesthetic appeal your boat deserves. They often sag, flap in the wind, pool water, and can even cause chafe, ultimately offering inadequate defence against the UK weather. A bespoke cover from UK Boat Covers is meticulously designed to follow every contour, ensuring a taut, secure fit that sheds water effectively and looks superb. Our unique postal copy service allows us to create an exact replica of your existing cover, guaranteeing a perfect fit without the need for you to transport your boat to our workshop, making precision accessible for every Project 31 Princess owner.

See our Project 31 Princess model page for full specifications and cover options.

Cover Types Available for the Project 31 Princess

For your Project 31 Princess, navigating the Thames, Broads, or Grand Union Canal, we offer a range of cover types to suit every need. A full canopy cover provides comprehensive protection for the entire cockpit and cabin entry, ideal for extended periods moored. Tonneau covers are excellent for keeping the cockpit dry and clean between uses, particularly practical for day trips. Cockpit covers are designed to fully enclose the open area, safeguarding seating and controls from sun and rain. Spray hoods offer crucial protection from splash and wind, improving comfort whilst underway. For complete off-season protection, a robust winter cover is essential, shielding your Project 31 Princess from harsh elements, debris, and UV damage, ensuring it remains in top condition year-round.

• Full Boat Canopy - Complete weather protection
• Tonneau Cover - Cockpit and deck coverage
• Cockpit Cover - Targeted cockpit protection
• Spray Hood - Windscreen and helm shield
• - Seasonal protection

Best Materials for Project 31 Princess Covers

Choosing the right material for your Project 31 Princess cover is crucial for optimal protection and longevity. We primarily offer two outstanding marine-grade fabrics: PVC and Acrylic. PVC marine fabric is exceptionally durable, completely waterproof, and highly resistant to mildew and UV degradation. It’s an excellent choice for a hard-wearing cover, especially for boats that spend extended periods uncovered on inland waterways like the Thames. Acrylic fabric, while also highly UV resistant and water-repellent, offers superior breathability. This helps to reduce condensation buildup underneath the cover, which can be a significant advantage in damp UK conditions. Acrylic often boasts a softer feel and a more ‘fabric-like’ appearance. Both materials offer excellent lifespan, but Acrylic provides enhanced breathability, whereas PVC offers ultimate waterproofing and ruggedness.

Compare materials in detail: Our fabrics page | Material comparison guide

Measuring Your Project 31 Princess for a New Cover

Accurate measurement is the cornerstone of a perfectly fitting Project 31 Princess cover. Your boat's specific dimensions, including its 31ft length and 10ft 6in beam, are critical starting points. When measuring, always account for any protrusions like windscreens, grab rails, or radar arches, measuring from the longest and widest points. It's vital to measure along the contours of the boat, not just straight lines. However, the easiest and most accurate method for Project 31 Princess owners is to utilise our celebrated postal copy service. Simply send us your old cover, and we will use it as a precise template to craft your new one. This eliminates any potential measuring errors and guarantees a snug, custom fit without you needing to lift a tape measure.

Need help? See our size guide or use our postal copy service to skip measuring entirely.

Project 31 Princess Cover Prices

Investing in a bespoke cover for your Project 31 Princess offers unparalleled value and protection. Our covers start from just £1,309 for PVC and £1,419 for Acrylic, reflecting the quality materials and expert craftsmanship involved. The final price can vary slightly depending on the complexity of your cover, including cut-outs for specific fittings or additional fastenings. What truly sets UK Boat Covers apart is that we are a small family-run business, meaning we don't charge VAT, effectively saving you a significant 20% compared to many competitors right from the outset. This makes our bespoke solutions incredibly competitive, providing a tailor-made cover for your Project 31 Princess that outperforms generic alternatives, all while delivering exceptional savings and ensuring a superior, longer-lasting product that perfectly fits your unique vessel.

View full price list | Request a personalised quote

How to Fit a Cover on Your Project 31 Princess

Properly fitting your new Project 31 Princess cover ensures maximum protection and lifespan. Begin by placing the cover loosely over the boat, aligning key features like windscreen cut-outs and any specific access points. Once positioned, progressively tighten the straps and fastenings, working from the bow towards the stern. Ensure the cover is taut across the entire boat, preventing any sagging areas where water could pool. Pay particular attention to the 10ft 6in beam, ensuring adequate tension to shed water efficiently. Utilize bungee cords or adjustable straps to secure the cover firmly to cleats or rub rails, especially around the cockpit and grab rail areas. Ensure adequate ventilation to prevent moisture buildup, particularly important when moored on the often humid Thames or Broads waterways.

Caring for Your Project 31 Princess Cover

Regular maintenance is key to extending the life of your Project 31 Princess boat cover, especially with the unique conditions of the Thames, Broads, and Grand Union Canal. Clean your cover seasonally, or more frequently if moored in an area prone to bird droppings or algae growth. Use a soft brush and a mild, non-detergent soap solution to gently scrub away dirt and grime, then rinse thoroughly. Avoid harsh chemicals or pressure washers, which can damage the fabric's protective coatings. Ensure the cover is completely dry before folding and storing to prevent mildew. Periodically check for any signs of wear, especially in areas of high friction. With proper care, your bespoke cover will provide years of reliable protection for your Project 31 Princess, keeping it pristine for all your waterway adventures.

More tips: Cleaning guide |

Our Postal Copy Service for Project 31 Princess Owners

Our unique postal copy service offers Project 31 Princess owners the ultimate convenience for obtaining a perfectly fitting cover. The process is incredibly straightforward: simply send us your existing Project 31 Princess cover, no matter how old or worn it is. Our skilled craftsmen in Carterton, Oxfordshire, will then use your original cover as a precise template to accurately replicate its dimensions and specific cut-outs. We will then expertly craft your new bespoke cover using brand-new, marine-grade PVC or Acrylic fabric. Once completed, your new cover is dispatched to you within an impressive 6 working days. This eliminates any guesswork, guarantees a perfect fit for your 31ft Princess without the need for measurements, and ensures a hassle-free, factory-quality replacement directly to your door.

1. Post your old cover to UK Boat Covers, Carterton, Oxfordshire
2. We create a perfect copy using your old cover as a template
3. Choose PVC or Acrylic marine-grade fabric
4. Receive within 6 days via tracked UK delivery

Learn more about our postal service