“Indoor” Polyethylene Boat Cover Sheeting – 50 m Roll (4 m / 6 m / 8 m / 10 m / 15 m Wide)

INDOOR polyethylene boat covers offer an innovative system for quick and easy covering of boats during the off-season. Instead of custom-fitted heavy canvas covers or laboriously piecing together tarps, here you have a single large roll (50 m) of durable polyethylene sheeting that comes factory-equipped with woven-in elastic cords along the edges. In effect, it turns the sheet into a giant fitted cover with elastic, much like a fitted bed sheet – but for boats.

How the system works:

• The roll comes in several width options (4 m, 6 m, 8 m, 10 m, 15 m). These numbers correspond to the flat width of the material. Choose the width based on the beam (width) of your boat (and the desired drop on the sides). For example, a 4 m wide sheet might cover a small runabout boat (roughly covering from waterline to waterline over the top). An 8 m wide sheet could handle a broader yacht or sailboat (ensuring you have enough to go up and over cabins, etc.). The largest 15 m width is for very wide vessels like catamarans or for use as one-piece cover for multiple smaller boats stored side by side.
• The material is on a 50 m long roll. This means you have 50 meters of continuous fabric at the chosen width to cut from. Typically, to cover a boat, you’ll cut a piece slightly longer than the boat’s length (to allow some overhang for tying at bow and stern). For instance, for a 25-foot (≈7.5 m) boat, you might cut ~10 m of material to have enough to drape and secure front and back.
• Integrated elastics: Running through the entire length of both long edges of the sheet (port and starboard sides of the boat when in use) are elastic shock cords enclosed in the hem. They run continuously through the 50 m roll. When you cut your piece off the roll, you will have ends of these elastic cords sticking out at each corner. The concept is as follows – after you drape the cover over the boat, you will use these elastic cords to secure it:
  1. Spread the sheet from stern to bow, roughly centering it over the boat. Ensure there’s about 50 cm (1.5–2 feet) of excess hanging down on each side (so the sheet is wide enough to go around the sides of the hull).
  2. Cut the sheet off the roll (if you haven’t pre-cut it). Now you’ll have four elastic ends (at each of the four corners of the sheet).
  3. Securing bow and stern: At the bow – take the elastic from the port and starboard edges and pull them together under/around the bow. Tie them together snugly. This closes the front of the cover like a bag. Do the same at the stern: grab the two elastic ends at the aft port/starboard corners and tie them together under the transom. Now the cover is roughly held in place longitudinally – it’s not tight yet, but it’s not going to blow off because it’s cinched at the ends.
  4. Tensioning the sides: Now, the cover is still loose around the sides of the hull. On one side, find the free end of the elastic cord (for example, depending on how you cut it, one end of the elastic might be free at the bow or stern – often you’ll have one free end per side once cut). Pull this elastic – as you stretch it, it will gather the hem of the cover along that side, cinching it under the hull’s edge. Pull it as tight as practical and then tie it off (perhaps to a cleat, trailer frame, or even tying it back onto itself). Repeat this on the other side with the other elastic end. As a result, the elastics act like drawstrings, pulling the cover’s edges tightly under the boat’s gunwale all along both sides.
  5. At this point, the cover is essentially self-secured by the continuous elastic tension – it hugs the boat all around the perimeter without significant slack.
  6. Use the specific reinforced precut areas if provided (the installation instructions mention them) – these might be spots in the cover designed for passing straps or tying the two side elastics to each other across the beam for added security. According to the manufacturer’s notes, you may connect the port and starboard elastics underneath the boat at intervals (using the pre-marked, reinforced spots) to form a kind of belly-band that ensures the elastics don’t slide down and the cover stays centrally positioned. Essentially, you’re adding a few cross-ties underneath as needed.

Advantages of the system:

• Speed and Ease: Compared to traditional methods (like fitting an old tarp with numerous ropes or heat-shrinking a plastic cover), the Indoor cover system is very quick. One or two people can cover a medium-sized boat in an hour or less, with no special tools. It’s intuitive – almost like tossing a big fitted sheet over the boat.
• Versatility: The different width options allow one system to accommodate various boat sizes. This is convenient for boat yards or clubs dealing with many boats – instead of stocking many custom covers, they can have a few rolls of Indoor cover in different widths. It’s also helpful for an individual owner who might change boats or wants to share a roll with a friend – the material adapts to different shapes and sizes.
• Integrated elastic cords: This is the key feature – it saves you from having to rig dozens of separate lines or weights around the cover’s edge. Once tensioned, the elastic edges automatically conform and grip the hull’s shape – minimal risk of wind getting under the cover. By contrast, if you just throw a plain plastic sheet over a boat, you then have to tie ropes around and underneath; those ropes can slip, and the process is tedious. Here, the “ropes” are built-in and evenly cinch the entire circumference.
• Protection: The cover material itself is a relatively heavy-duty polyethylene (thickness not explicitly stated, but likely on the order of a few hundred microns). It is waterproof – rain, sleet, snow will not penetrate. It protects the boat’s finish from UV rays – preventing sun fade on paint or gelcoat. It also keeps out dust, leaves, bird droppings, and other debris. Plus, it keeps water out of the boat, which is vital to prevent mold and interior damage. At the same time, if installed properly with some ventilation (e.g., you can install a few vent caps – typically done by cutting a small hole and taping a vent), the cover can allow moisture to escape to avoid condensation buildup inside.
• Intended Storage Conditions: The Indoor cover is designed for boats stored on land, in marinas or under some shelter (“indoor” suggests it’s ideal for shed or covered marina storage; however, many users successfully use it outdoors as well, because the material is robust). Compared to shrink-wrapping, using this system doesn’t involve an open flame or heat tool – so it’s safer and more DIY-friendly (no risk of accidentally overheating and melting a hole or causing a fire). On the other hand, it won’t be quite as drum-tight as a heat-shrunk cover in extreme wind or heavy snow, but for moderate climates or short-term storage it works excellently.

Available sizes (widths) and selection guide:

• 4 m width (Osculati code 46.174.00): Suited for small boats, dinghies, or runabouts (roughly up to 4–5 m length). Also can cover personal watercraft or other small marine gear.
• 6 m width (46.174.01): Good for medium-sized motorboats or sailing boats (maybe in the 6–8 m length range), or boats with moderate beam/height.
• 8 m width (46.174.02): Ideal for larger sailboats or motor yachts (~8–10 m long) where extra width is needed to go over cabins, consoles, or flying bridges.
• 10 m width (46.174.03): For big yachts (~10–12 m or more) or wide craft like catamarans up to about 10 m beam. Ensures you have plenty of material to reach all the way down the sides.
• 15 m width (46.174.04): Extremely wide sheet for very large yachts (covering superstructure up to ~15 m beam) or multi-hull vessels. Also could be used to cover multiple smaller boats at once (e.g., a row of dinghies or kayaks grouped together) due to its massive span.

One 50 m roll potentially can cover multiple boats, depending on their length. If you have leftover material, the roll can be stored for future use – keep it in a cool, dark place (UV light will degrade polyethylene over time).

Installation tips: While straightforward, it’s best done on a calm day with ideally two people. Ensure any sharp points (antennas, rod holders, etc.) are padded or removed to prevent puncturing the plastic. It’s helpful to have a support structure or framework (such as a center pole or temporary struts) to create a tent-like peak so water doesn’t pool on the cover. The Indoor cover, once cinched, will conform to that shape. Without a slope, water or snow could cause sagging, so do consider using prop poles or a simple lattice of wood under the cover for larger boats.

In conclusion, the INDOOR polyethylene cover roll is a flexible solution for many scenarios. It allows you to get a custom-like fit at a fraction of the cost and effort of bespoke covers or professional shrink-wrap, especially if you have multiple boats or plan to reuse it. It’s somewhat of a one-size-fits-many approach that doesn’t compromise much in protection. Particularly for yard storage or moderate climates, this product lets you adapt the cover’s length and width to your exact needs without any sewing – just cut, pull, and tie. It’s an invaluable option for boat owners and marine service providers looking for an efficient and reliable way to guard boats against the elements.