Ship-to-Ship Transfer Fender, Mooring, Hose & Transfer Planning Tool

Marine Operations • Fender Energy • Mooring • Hose Hydraulics • Cargo Transfer

Ship-to-Ship Transfer Fender, Mooring, Hose & Transfer Planning Tool

Build a two-vessel STS concept, screen approach energy and manufacturer fender ratings, compare hose and mooring assumptions, and plan staged cargo transfer. Flags identify engineering verification and joint-plan hold points before any operation proceeds.

Interactive STS arrangementEnergy / reaction checksHose velocity & pressure lossWind / current screeningTransfer-stage program

Fast STS concept: 12 inputsSimple estimates duration, approach energy and hose flow velocity. Mooring loads, manufacturer force checks, full hydraulics and cargo-specific limitations require Advanced mode. Demonstration values are not operating recommendations.

STS Snapshot

Engineering and operational reviewEnter manufacturer-certified equipment data and vessel-specific limits. Complete the stage, fender, mooring and readiness registers below the live results. The model is a screen, not an approved engineering analysis.

Engineering boundary: Values are screening calculations, not safe working limits or STS authorization. Real fender selection requires manufacturer force/deflection curves, vessel geometry and approved approach analysis. Mooring requires a proper line-force / environmental analysis. Hose design requires cargo-specific pressure, surge, temperature, compatibility and tested assembly records. This model is not suitable for approving LNG/LPG/chemical transfer without specialist studies.

Transfer Stage Register

Volumes must sum to the total cargo volume. Stage-specific flow rates and interruptions form the detailed transfer duration.

Use	Stage / sequence	Volume m³	Rate m³/h	Extra hours	Calculated hours	Remove

Primary Fender Register

Manufacturer energy and reaction values must refer to the stated deflection and applicable installation conditions. Available fenders are not necessarily all engaged during an approach.

Use	Position / type	Quantity	Engaged count	Energy each kJ	Reaction each kN	Status	Remove

Mooring Line Group Register

Line working fraction and lead-efficiency are explicit screening assumptions, not manufacturer or OCIMF universal operating limits. Full load sharing, pretension, line angles, chafing and dynamic loading are outside this model.

Use	Line group	Number	MBL / line kN	Lead efficiency (0–1)	Condition	Remove

STS Equipment & Operational Readiness Register

Critical failed or unverified checks can block the planning decision independently of equipment-utilization ratios.

Use	Verification item	Discipline	Critical?	Readiness	Evidence / responsible person	Remove

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