I’ve been using the small Palm Equipment Lightning throwline as my small carry on a belt throwline. The compact size of the bag makes it ideal for this purpose. To achieve this size, it only uses 18m of 8mm rope with a 8KN breaking strain.
In addition to a small bag I also like to have a larger burlier throwline in the boat. This is where the new Bolt throwline comes into to play. The Bolt takes many of the features of the Lightning and scales thing up. As a result it includes 20m of 11mm rope with a breaking strain of 10KN. This is strong enough to use as a haul line, but is still light enough for person to person rescues. The rope is really nice to handle even when under considerable load. A nice touch is that the two ends of the rope have been shrink wrapped.