How to select floating pneumatic fender ?

Ship-to-Ship

The fender selection procedure for ship-to-ship operations is outlined below.

Two ship types, sizes and weather conditions such as Calm, Moderate and Rough are initially confirmed.

OCIMF Table Selection

Equivalent displacement coefficient ; ”C” is calculated, and fenders are selected tentatively by using the table in OCIMF Ship-to-Ship Transfer Guide ; ” OCIMF Table Selection”. In this case, initial internal pressure of the fender shall be 50kPa (Pneumatic 50). The selections are designed based on Calm weather condition, therefore if the weather is confirmed as Calm, the fender system can be simply selected from the tables.

Quick Reference Guide to Fender Selection for STS Operations

PETROLEUM, CHEMICALS and LIQUEFIED GASSES
Equivalent Displacement Coefficient (C) Relative Velocity Berthing Energy Suggested Fenders
Tonnes m / s Tonnes.m Diameter × Length (m) Quantity
1,000 0.30 2.4 1.0 × 2.0 3 or more
3,000 0.30 7.0 1.5 × 3.0
6,000 0.30 14.0 2.5 × 5.5
10,000 0.25 17.0 2.5 × 5.5
30,000 0.25 40.0 3.3 × 6.5 4 or more
50,000 0.20 48.0 3.3 × 6.5
100,000 0.15 54.0 3.3 × 6.5
150,000 0.15 71.0 3.3 × 6.5 5 or more
200,000 0.15 93.0 3.3 × 6.5
330,000 0.15 155.0 4.5 × 9.0 4 or more
500,000 0.15 231.0 4.5 × 9.0

Model Selection of Pneumatic Fender for Small & Middle Size Ship

Ship Tonnage (T) Recommendation Size D x L ( m) Ship Type
50 0.5 x1.0 Fishing ship
100 0.7 x 1.5~1.0 x 1.5 Fishing ship
200 1.0 x 1.5~1.2 x 2.0 Fishing ship, towing ship
300-500 1.2 x 2.0~1.5 x 2.5 Fishing ship, towing ship
1000 1.5 x 2.5~1.5 x 3.0 Towing ship, cargo ship
3000 2.0 x 3.0~2.0 x 3.5 cargo ship, ocean trawler
10000 2.0 x 3.5~2.5 x 4.0 cargo ship

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