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TOEIC Link Vocabulary Cluster — Mooring Winch and Brake Holding Capacity Survey: The Report Lexicon for the Machinery That Holds a Ship to the Berth

A mooring winch survey examines the machinery that pays out, heaves in, and — most critically — holds the lines that keep a ship on the berth: the drum the rope wraps on, the band brake that must slip before the line parts, the render setting that decides where that slip happens, and the holding-capacity test that proves it. This cluster isolates the 40-plus terms the survey deploys and maps each to its register tier and native collocation, so a TOEIC Link marine survey reading passage becomes a domain you read at speed rather than decode word by word.

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TOEIC Link Vocabulary Cluster — Mooring Winch and Brake Holding Capacity Survey: The Report Lexicon for the Machinery That Holds a Ship to the Berth

A moored ship is held to the berth by ropes, and the ropes are held by winches. When wind and current push on the hull, the load on a mooring line can rise until something has to give — and the design intent is that the winch brake slips and pays out a little line before the line itself parts, because a rope that parts under tension snaps back across the deck at lethal speed. The mooring winch survey exists to prove that the brake gives way at the right load, and that fixed relationship — the brake must render below the line's breaking strength but above the working load — recurs as a source domain for TOEIC Link marine survey reading passages. The workflow is stable: the winch is examined, the brake linings and drum are checked, the brake is set, and its holding capacity is proved by test. That workflow generates a cluster of roughly forty terms, and a candidate who owns it reads the passage at native speed while a candidate who does not stalls on the process nouns and loses the argument.

This guide isolates the cluster, groups it by survey stage, and maps each term to its native collocation and register tier, because TOEIC Link scores writing as well as reading. Pair it with the writing vocabulary precision and collocation discipline guide for the skill of choosing the exact term, and with the anchor chain and windlass survey cluster, whose drum, brake, and holding-load vocabulary overlaps directly with the deck-machinery language here.

Why this cluster rewards study

A mooring winch passage assumes its vocabulary the way a windlass or steering-gear passage does. If a reader decodes render, band brake, and holding capacity one word at a time, the attention the module intends for the inferential questions is consumed by decoding. Learning the cluster converts those stalls to zero and frees the reader to answer what the passage actually asks — why a brake that held the line was still condemned, what a holding-capacity figure was measured against, and where in the argument the disputed setting lies.

Stage 1 — The winch and the drum

The survey begins at the machine. A mooring winch turns a drum on which the mooring rope or wire wraps, driven through a gearbox by an electric or hydraulic motor. Many winches carry a warping end or drum-end for handling lines by hand and a split drum with a tension side that holds the working turns and a storage side that stows the spare rope. The survey confirms the drum, the gearing, and the drive are sound and that the rope is in condition. The register is exact: the drum is confirmed free of sharp edges or wastage that would damage the rope, and a finding of a scored or grooved drum is a defect distinct from any fault in the brake downstream. The passage often turns on keeping the machine that pays out the line separate from the brake that holds it.

Stage 2 — The band brake and its linings

The heart of the survey is the band brake: a steel band lined with brake linings that wraps the brake drum and is tightened by a handwheel and screw or a spring against a hydraulic release. When the band grips, it holds the drum and the line; when the load exceeds the set point, the band slips and the line renders — pays out under control instead of parting. The survey confirms the linings are not worn below limit, not oil-soaked, and bedded onto the drum, because oil on the linings drops the holding load unpredictably. The register is unforgiving: linings are confirmed clear of oil contamination, and a finding of oil-soaked brake linings is a holding defect on its own, because a brake that looks tight can still let go early once its friction is gone. The passage usually makes the reader locate a lost-holding finding on the brake rather than on the drum or the drive.

Stage 3 — The render setting and the holding capacity

Here the survey does its central work. The brake is set so that it renders — begins to slip — at a defined fraction of the rope's minimum breaking load (MBL), typically around sixty per cent, which is the brake holding capacity. Set too high and the line parts before the brake gives; set too low and the brake slips under normal working load and the ship drifts off the berth. The survey proves the setting by a holding-capacity test, applying a known load and confirming the point at which the brake renders. The register here is the sharpest in the survey: a brake is confirmed to render at the design percentage of MBL, and a finding that the brake held past the rated holding capacity is as serious a defect as one that rendered below working load — both defeat the purpose, from opposite directions. The passage's most demanding questions live at exactly this two-sided boundary, where a reader must see that too much holding and too little holding are both failures.

Stage 4 — Automation, protection, and the record

The survey closes at control and record. Many modern winches offer auto-tension, in which the winch automatically heaves or pays out to hold the line at a set tension as the ship rises and falls on the tide — and the survey confirms the auto-tension control and its tension limit, because a mis-set limit can overload a line silently. The survey confirms the emergency release, the local control station, and, where fitted, the load monitor that reads out line tension on the bridge. The record — the last brake test, the lining renewals, and the class survey status — is confirmed complete and signed. The register here is decisive: a winch is accepted only when the brake renders at its rated holding capacity and the record is in order, and a finding that the brake test was overdue stands as a survey-record defect on its own, in the way a lightly scored drum does not. The passage's hardest questions usually turn on the difference between a mechanical defect that is repaired and a proof defect — an unproven brake — that stands as a finding until the test is done.

How to drill this cluster

Read the terms in survey order — winch and drum, band brake and linings, render setting and holding capacity, automation and record — because that is the order the passage will deploy them, and a cluster learned in workflow order is recalled in workflow order. Then write three report sentences of your own: one confirming a brake that rendered at the design percentage of MBL on test, one condemning oil-soaked linings that dropped the holding load, and one recording an overdue brake test as a survey-record defect. Writing the cluster is what moves it from recognition to production, which is the difference TOEIC Link measures. For the shared drum-and-brake language of ground tackle, work the anchor chain and windlass survey cluster alongside this one, and for the register discipline that turns recognized terms into precise report sentences, work the writing vocabulary precision and collocation discipline guide.