Maritime 21 Boat Cover Guide: Sizes, Materials & Prices

Introduction: Why Your Maritime 21 Deserves a Bespoke Cover

Welcome, Maritime 21 owners, to your definitive guide for securing the perfect boat cover for your cherished vessel. This popular 21ft boat, with its generous 7ft 10in beam, is a familiar sight gracing the serene waters of the Thames, navigating the intricate Grand Union Canal, or exploring the picturesque Oxford Canal. Given the diverse weather conditions encountered on these waterways, a high-quality, bespoke cover isn't just an accessory; it's an essential shield. A properly fitted cover protects your investment from rain, UV damage, and debris, preserving its condition and ensuring longevity. At UK Boat Covers, we understand the specific needs of your Maritime 21. Our bespoke covers for this model start from just £902 for robust PVC and £1,012 for premium Acrylic, offering unparalleled protection tailored precisely to your boat.

Why Choose a Bespoke Cover for the Maritime 21?

The Maritime 21, with its distinctive hull shape, specific deck layout, and a beam of 7ft 10in, simply demands a bespoke boat cover. Unlike generic, 'one-size-fits-all' options that sag, chafe, or fail to fully protect, a custom-made cover from UK Boat Covers contours perfectly to every curve and fixture of your vessel. This precision fit is crucial to prevent water pooling, reduce wind lift, and ensure maximum protection against the elements prevalent on the Thames or canals. Universal covers often leave vulnerable areas exposed or create abrasive friction points, leading to premature wear on both the cover and your boat. Our unique postal copy service allows us to replicate the exact dimensions of your old cover, guaranteeing a flawless, snug fit that off-the-shelf alternatives can never achieve, providing superior defence for your Maritime 21.

See our Maritime 21 model page for full specifications and cover options.

Cover Types Available for the Maritime 21

For the Maritime 21, a range of cover types offers tailored protection depending on your usage on the Thames, Grand Union, or Oxford Canal. Our popular canopy covers provide comprehensive shelter over the cockpit, ideal for day-to-day use, offering sun shade and rain protection while moored. Tonneau covers are perfect for securing the cockpit when the boat is not in use, keeping it dry and clean. Cockpit covers focus on enclosing the primary seating area, great for short-term stops. Spray hoods are excellent for deflecting water and wind during navigation, enhancing comfort. For periods of extended mooring or winter storage, a full winter cover offers robust, all-encompassing protection from harsh weather. Each type is designed with the Maritime 21's dimensions and typical use in mind, ensuring optimal performance and protection against the unique challenges of inland waterways.

• 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 Maritime 21 Covers

Choosing the right material for your Maritime 21 cover is crucial for optimal protection on inland waterways. We offer two primary options: PVC marine fabric and premium Acrylic. Our robust PVC covers, ideal for vessels on the Thames or canals, boast exceptional waterproofing and durability, providing a thick, impenetrable barrier against heavy rain and environmental debris. They offer a fantastic lifespan and are incredibly easy to clean. Alternatively, our Acrylic fabric covers offer superior breathability, which is excellent for preventing condensation and mildew build-up, especially during longer mooring periods. Acrylic also features enhanced UV resistance, maintaining its vibrant colour and structural integrity over many years of sun exposure. While PVC excels in absolute waterproofing and rough-and-tumble durability, Acrylic offers a balance of protection, breathability, and aesthetic longevity, making both excellent choices depending on your specific needs and mooring conditions for your Maritime 21.

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

Measuring Your Maritime 21 for a New Cover

Accurate sizing is paramount for a perfect fit on your Maritime 21. While our postal copy service largely negates the need for you to measure, understanding your boat's dimensions is always beneficial. Your Maritime 21 measures 21ft in length with a substantial 7ft 10in beam. When measuring, focus on the overall length from bow to stern, ensuring you account for any bowsprits or swim platforms. For the beam, measure the widest point. Critical measurements also include the height from the deck to the highest point (e.g., windscreen or mast) and around any permanent fixtures like grab rails or cleats. Precise measurements prevent unnecessary stress points on the cover. However, for ultimate accuracy and peace of mind, our innovative postal copy service allows you to send us your old cover, and we'll expertly create a new one with an identical, flawless fit, eliminating any potential measuring errors.

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

Maritime 21 Cover Prices

Investing in a bespoke cover for your Maritime 21 represents true value, especially with our transparent pricing and unique savings. Our durable PVC covers for your 21ft vessel start from an attractive £902, while our premium, breathable Acrylic options begin at £1,012. These prices reflect the quality of marine-grade materials and expert craftsmanship tailored precisely to your boat's 21ft length and 7ft 10in beam. The cost is influenced by the cover type (e.g., tonneau versus full winter cover), material choice, and any specific design complexities. What truly sets us apart is that, as a family-run business, we don't charge VAT, meaning you automatically save a significant 20% compared to VAT-registered competitors. This saving often makes our bespoke covers more cost-effective than generic options in the long run, delivering superior protection and a perfect fit for unparalleled value for your Maritime 21.

View full price list | Request a personalised quote

How to Fit a Cover on Your Maritime 21

Fitting your new bespoke cover on your Maritime 21 is straightforward, ensuring maximum protection and longevity. Start by positioning the cover centrally over the boat, paying close attention to the bow and stern. Carefully unfold it, aligning specific features like the windscreen cut-outs or grab rail sleeves if applicable. The Maritime 21's cockpit layout will dictate how the cover settles. Once roughly in place, begin securing the straps or bungees, working from bow to stern on both sides to create even tension. Ensure the cover is pulled taut across all surfaces to prevent water pooling, especially over the main cockpit area. Check for any sagging and adjust the tension accordingly. Proper ventilation is key; if your cover includes vents, ensure they are unobstructed. A snug fit will prevent wind flap and abrasion, critical for protecting your Maritime 21 on the windy Thames or busy canals.

Caring for Your Maritime 21 Cover

Proper maintenance is key to extending the life of your Maritime 21 boat cover, especially with the varied conditions on the Thames, Grand Union, or Oxford Canal. Regularly clean your cover with mild soap and lukewarm water, gently scrubbing away dirt, bird droppings, and algae build-up. Avoid harsh chemicals or pressure washers, which can damage the fabric's waterproofing and UV protective coatings. For PVC covers, a quick wipe down often suffices. Acrylic covers benefit from allowing them to air dry completely to prevent mildew. During winter storage, ensure the cover is completely dry before folding and storing in a cool, dry place. Periodically check for any small tears or worn areas and address them promptly. With diligent care, your bespoke UK Boat Covers cover will provide many years of reliable protection for your Maritime 21, keeping it pristine season after season.

More tips: Cleaning guide |

Our Postal Copy Service for Maritime 21 Owners

Our innovative postal copy service is designed to provide Maritime 21 owners with a perfectly fitting cover without the hassle of bringing your boat to us. The process is simple and efficient: first, you send us your old Maritime 21 cover, regardless of its condition. Upon receiving it, our skilled team meticulously uses your old cover as a precise template. We then expertly cut and sew your new cover from high-quality, marine-grade PVC or Acrylic fabric, ensuring an exact replica of the original's dimensions and fit. This bespoke manufacturing process guarantees a flawless, snug cover tailored specifically for your 21ft boat. Once completed, your brand-new, custom-fit Maritime 21 cover is meticulously packaged and dispatched to you within just 6 working days, ready to provide superior protection with zero effort from your side.

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