In the Knaapit product group you will find bollards for boat mooring lines, or knaapit, from several brands: Seaworld knaapit (60mm), Allen brand 62mm plastic knaapit, Barton brand wire-mounted knaapit (also equipped with a loop) and the Portacleat fastening ring, which allows temporary fastening of the knaapit without permanent installation. The knaapits are part of the wider Deck Fittings selection .
The size and material of the cleat should be chosen according to the rope thickness and operating load – a cleat that is too small will not provide enough space for the rope to loop through for safe attachment, while an oversized cleat will take up unnecessary space on the deck. The cable-attached model (Barton) is particularly suitable for sailboats, where the cleat must be able to be flexibly positioned at different points on the railing without fixed drilling.
A Portacleat-type temporary mooring ring is useful, for example, in guest boat moorings or in situations where a permanent cleat is not available on the dock – it provides a secure mooring point without the need to modify the boat or dock. Always ensure the cleat is securely attached to the deck before use, as the entire boat's mooring relies on its durability.
The method of attaching the cleat to the deck or railing structure directly affects its resistance to loading: a bolted-through cleat reinforced with a washer can withstand significantly more traction than a model attached to the deck with just screws, which is why the method of attachment should always be sized according to the expected loading of the cleat (for example, towing or storm attachment), not just according to the conventional dock attachment.
The Barton model, which is attached to a wire, is particularly suitable for sailboats where flexibility in placing the cleat on the rail is desired without the need for permanent drilling into the deck – this is useful, for example, in variable harbor conditions where the need for mooring points varies. Plastic cleats (such as Allen 62mm) are lighter and cheaper, but do not withstand as high loads as metal counterparts, so they are better suited to smaller boats and lighter use. Check the condition of the cleat and its attachment regularly, as the entire boat's dock attachment ultimately relies on the durability of these small parts.
Check the structural support of the deck around the stud before installation – a thin or unreinforced deck can break under heavy tensile loads, even if the stud itself is strong enough.
Avoid overloading the belay device with multiple ropes at the same time unless it is specifically designed for this purpose – excess loading can reduce the durability of the belay device in the long term.
Clean the area around the knaap regularly to remove salt deposits, as accumulated salt can weaken both the knaap and its attachment in the long term.