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Understanding Tender-Lifting and Crane Systems

Tender-lifting systems raise, lower and position tenders, personal watercraft and stores while controlling static weight, outreach, vessel movement and dynamic forces.

Common arrangements include pedestal cranes, fixed or articulated davits, powered platforms and garage-recovery systems. Their safe capacity depends on the complete load path, including the yacht’s structure, crane geometry, winch, line, rigging and tender lifting points.

This free technical guide gives yacht owners and prospective buyers a practical introduction to tender-lifting and crane systems. It explains the principal arrangements, rated-load considerations, common warning signs and the importance of completing every operation with the tender properly secured for sea.

Download the Free Guide

Why tender-lifting and crane systems matter

A tender may appear relatively light ashore but behave very differently when suspended from a moving yacht.

Roll, pitch, wind, water trapped inside the tender and sudden movement can create dynamic loads significantly greater than the tender’s static weight. Capacity also changes with crane outreach, so equipment that can lift safely close to the pedestal may be overloaded at full radius.

The lifting appliance is only one part of the system. Foundations must transfer loads into the yacht’s structure, brakes must hold securely, ropes and rigging must remain within their rated condition, and controls and limits must prevent overtravel.

Suspended loads present a serious risk to people and equipment. Safe operation requires a clear exclusion zone, suitable communication, rated lifting accessories and a planned route from stowed position to the water and back again.

What this guide covers

The guide explains:

  • Pedestal cranes and variable-outreach booms

  • Fixed and articulated davits

  • Hydraulic and electric lifting arrangements

  • Platform and garage-based tender systems

  • Safe working load and load-radius limitations

  • Crane foundations, pedestals and structural support

  • Booms, jibs, articulation and telescoping sections

  • Winches, drums, brakes and gearboxes

  • Wire ropes and synthetic lifting lines

  • Hooks, shackles, slings and tender lifting points

  • Controls, limit switches, interlocks and emergency stops

  • Static and dynamic loading caused by vessel movement

  • Tag lines, exclusion zones and communication during lifts

  • Securing tenders independently for sea

  • Corrosion, cracks, leakage, poor spooling and other warning signs

  • Inspection records, lifting certificates and maintenance planning

Who is this guide for?

This guide may be particularly useful if you are:

  • Considering the purchase of a yacht carrying a tender or personal watercraft

  • Assessing a yacht for extended or offshore cruising

  • Trying to understand an unfamiliar crane or davit installation

  • Reviewing the yacht’s tender-launch and recovery procedure

  • Investigating hydraulic leaks, poor braking or unusual movement

  • Checking lifting slings, hooks, ropes and certification

  • Planning crane servicing, structural work or equipment replacement

  • Reviewing whether the tender can be secured properly for sea

  • Looking to improve crew familiarity with safe lifting operations

Questions the guide will help you answer

After reading the guide, you should be better placed to answer:

  • What type of crane, davit, platform or tender-recovery system is installed?

  • What is the certified safe working load?

  • How does capacity change with crane radius and configuration?

  • Does the tender’s actual operating weight include fuel, engine, equipment and trapped water?

  • Are the crane pedestal, foundations, welds, bolts and deck structure in sound condition?

  • Are the winch, brake, gearbox and drum operating smoothly?

  • Is the wire or synthetic line correctly spooled and within replacement limits?

  • Are hooks, shackles, blocks, slings and tender lifting points suitably rated?

  • Do controls, emergency stops, limit switches and interlocks operate correctly?

  • Can the load be controlled using suitable tag lines without placing crew beneath it?

  • Is there a clear exclusion zone and agreed communication method?

  • Could vessel roll, pitch, wind or tender movement overload the equipment?

  • Can the system be operated safely if a hydraulic, electrical or control fault develops?

  • Is the tender secured independently after lifting rather than left hanging from the crane?

  • Are current service records, lifting certificates and manufacturer instructions available?

Download the guide

Gain a clearer understanding of how tender cranes and lifting systems manage rated loads, rigging, structure and vessel movement during launch, recovery and stowage.

Download the Free Tender-Lifting and Crane Systems Guide
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