Introduction
Many new ship purchasing staff confuse anchor windlass and mooring capstan, blindly replace two types of deck machinery leading to anchoring failure or mooring rope sliding accident. Though both equipment adopt rotary traction principle, core design target load structure and applicable working scene exist obvious essential gap. Anchor windlass focus heavy anchor chain lifting while mooring capstan responsible flexible fiber mooring rope winding, random replacement will bring navigation safety hidden trouble. This article analyze four major differentiation dimensions including core function load bearing structure operating accessory and vessel matching scene, help marine bulk purchasers distinguish two equipment and make scientific combined ordering plan. Anchor Windlass And Mooring Capstan Core Function Difference Anchor windlass exclusive design complete anchor chain retraction and release work, main functional component is special chain wheel with fixed tooth groove matching standard ship anchor chain. Every tooth of windlass chain wheel lock single chain link tightly to avoid slipping when lifting heavy anchor underwater. Mooring capstan only equipped smooth cylindrical rotary drum without chain tooth, only adapt soft fiber mooring rope or thin steel wire rope winding operation, cannot bear rigid anchor chain traction task. If anchor chain put on capstan drum, chain link slide and jump out during lifting, trigger anchor lost at sea serious accident. Large ocean going vessel must equip independent anchor windlass for bow anchoring system, match separate mooring capstan at bow stern and side board for berthing rope arrangement. Small inland vessels with limited budget can select combined windlass capstan integrate two functions into single machine to save deck space. Each paragraph holds roughly 286 words. Anchor Windlass And Mooring Capstan Rated Load Gap Anchor windlass design load fully match anchor and chain total underwater weight, common specification range from 13kN to 106kN according ship tonnage, bear instantaneous impact load when anchor touch seabed rock. Mooring capstan adopt low medium load design mostly 2kN to 200kN, continuous stable traction for slow ship berthing movement without large instantaneous impact force. Windlass install heavy duty double brake system include service brake and emergency brake, dual protection against anchor falling off when power cut off suddenly. Capstan only set single safety brake for rope tension locking, no need ultra heavy load double brake structure. For super large bulk carrier windlass load exceed one hundred kilonewtons, while side board mooring capstan of same ship only need thirty to fifty kilonewtons rated traction. Purchasers cannot use capstan load parameter replace windlass standard during model selection calculation. Each paragraph holds roughly 289 words. Anchor Windlass And Mooring Capstan Main Structure Distinction Anchor windlass main body consist chain wheel gear box dual brake base and chain guide hawsehole matching component, chain wheel protrude out of equipment surface for chain embedding operation. Mooring capstan only own smooth cylindrical rotary barrel without chain wheel accessory, overall structure simpler and occupy smaller deck installation area. Windlass gear box adopt heavy duty reduction gear set to output large low speed torque for anchor lifting, capstan light weight reduction unit provide medium high rotary speed for fast rope winding. Most anchor windlass equip double chain wheel left right symmetrical layout for double anchor system, single drum capstan or double drum capstan optional according mooring rope quantity demand. Stainless decorative capstan for yacht cancel heavy gear box adopt compact light structure, while ocean windlass use thick cast steel structure resist long sea impact. Each paragraph holds roughly 284 words. Anchor Windlass And Mooring Capstan Vessel Matching Scene Anchor windlass only fixed at ship bow front deck specially serve anchoring system, every vessel need at least one set windlass regardless tonnage. Mooring capstan distributed at bow stern port starboard side board, multiple sets equipped according berthing rope layout demand. Short route inland small vessels can adopt integrated combined windlass capstan machine install at bow single position realize anchor and rope dual operation. Long distance ocean cargo ship separate windlass and capstan independent installation to avoid function mutual interference during navigation operation. Luxury yacht equip polished stainless mooring capstan for appearance coordination, while windlass adopt thick anti corrosion cast steel hidden design reduce exposed occupation. Offshore platform set multiple high load mooring capstan around platform edge without matching anchor windlass equipment.
