In the 16mm blocks section you will find Harken's smallest blocks for lightweight rope systems: basic block, block with hunsvot (H405), lying block (H416), block with cutter (H417), deck block (H432), fork-mounted block (H376), double block (H406) and double block with hunsvot (H407).
What does a 16mm block fit into on a sailboat?
16 mm is one of Harken's smallest block sizes and is suitable for particularly light rope systems, such as rigging small dinghies, stringing a cabin canopy, or controlling light auxiliary functions on a larger boat, such as a flag line or a small pulley system.
The deck block (H432) is attached directly to the deck surface and is suitable for locations where the rope needs to be guided low along the deck plane without the block rising up in a disruptive manner – this is a practical solution in confined spaces or locations where the rope must not rise too high.
The fork-mounted model (H376) allows the block to be mounted directly on the mast or boom with a fork-like attachment, while the hunsvot-style versions are suitable for locations where the block must rotate freely according to the rope pull direction during use.
The horizontal block (H416) is designed specifically for low-profile installations where space is limited – it works on the same principle as a regular block, but its design takes up less vertical space at the installation site.
The block with a cutter (H417) allows for quick removal and attachment without tools, which is useful when you want to move the same block to different places on the boat according to different sailing situations, for example in racing.
Although 16 mm is a small size, when selected correctly it can withstand the loads of lighter rope systems - however, always check the manufacturer's stated load capacity before using it in a heavier application to ensure that the block is not overloaded.
It's a good idea to carry a few spare blocks if you sail a lot and use several light rope systems at the same time – small blocks are cheap, but missing them in the middle of a sail can hinder the operation of the entire system.
Check the smooth rotation of the block regularly and rinse it with fresh water at the end of the season to prevent salt and sand from accumulating on the bearing surfaces, as even a small amount of dirt can significantly slow down rotation in this size class.
Choose the block mounting method according to the application: a fixed installation is suitable for permanent use, while a model with a cutter gives you the flexibility to change the rope route as needed in different sailing situations and with different rope thicknesses.