Ronstan's All Purpose (AP) blocks use self-lubricating Acetal polymer sheaves with polished stainless steel races that allow these blocks to handle dynamic and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Intended for communications between ships aircraft and authorities ashore during situations related to the safety of navigation and person especially useful when language difficulties arise.
The 2021 edition includes up-to-date, consolidated text in line with amendments adopted up to 1 July 2021 and updated unified interpretations that have been keyed to relevant articles and regulations.
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