本文件规定了用于引导船舶系泊和拖缆的巴拿马楔块的类型、标称尺寸、尺寸和材料，以及施工、制造和标记要求。它适用于通过巴拿马运河的船舶，通常由使用钢制拖缆的机车和/或拖船协助通过船闸。这些楔块满足正常系泊要求和巴拿马运河要求；它们适用于巴拿马运河船闸内的系泊船舶。 注:巴拿马Plus和Neopanamax船舶的巴拿马楔块（SWL为90吨）可替换为封闭式楔块（见ISO 13729）。

This document specifies the types, nominal sizes, dimensions and materials, as well as construction, manufacturing and marking requirements, for Panama chocks installed to lead the mooring and towing rope of a ship. It is intended for ships passing through the Panama Canal, which are normally assisted through the locks by locomotives using steel towing wires and/or by tug boats. These chocks meet normal mooring requirements and Panama Canal requirements; they are suitable for mooring vessels inside the Panama Canal locks. NOTE The Panama chocks (SWL of 90 tons) for the Panamax Plus and Neopanamax vessels can be replaced by closed chocks (see ISO 13729).