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PIANC WG235 
Oceangoing Ship Data for Port Planning & Design 
Bob Lamont-Smith, BE CPE1, Gary Greene, PE D.PE2, Christian Hein, MSc CE3, L. 
López González, MSc4, Rune Iversen, P.E., M.ASCE5, Erik J. Broos, MSc CE6 
1 Engineering & Port Infrastructure Consultants, Email lamont2@iinet.net.au 
2 Gary Greene Engineers, Email gkgreene@earthlink.net 
3 Port of Bremen, Email Christian.Hein@BremenPORTS.de 
4 Siport21, Email luis.lopez@siport21.com 
5 Simpson Gumpertz & Heger, Inc., Email riversen@sgh.com 
6 Port of Rotterdam, Email Broos, EJ.Broos@portofrotterdam.com 
ABSTRACT 
Almost every PIANC MarCom report that deals with sea going vessels has a certain table with 
design vessels in it. As a lot of these tables are written by the specific working group, there are 
differences between design vessels in many MarCom reports. It is very beneficial if all reports 
would use the same design vessels such that one can design a harbour mouth, a harbour basin, a 
mooring configuration with specific bollards and specific fenders all related to the same design 
vessel. 
To resolve this, a first table of design vessels is created and presented in this paper. The table is 
produced under working group 211 “Fender design guidelines” but contains input from other 
affected working groups. 
In the development of WG235, PIANC has taken the opportunity to include additional data on 
wind areas, mooring winch numbers, manifold locations, and the like. 
To be able to benefit as soon as possible from this table, WG235 will be released separately 
before the WG211. The intention of MarCom is to regularly update this table in the future to 
obtain a central shipping list for all reports. 
INTRODUCTION 
As part of the scope for preparing revised guidelines for the design of fenders PIANC Working 
Group 211 was tasked with updating vessel design data. As this impacts a broad number of 
PIANC publications PIANC has determined to create a single documented source of vessel data 
& dimensions for port planning & design guidelines. This is published as WG235 “Oceangoing 
Ship Data for Port Planning and Design – 2022”. 
This has the advantage of removing the need to update multiple publications to adjust vessel 
design data as changes occur over time. The format is suitable for updating & expansion on an as 
needed basis. 
mailto:lamont2@iinet.net.au
mailto:gkgreene@earthlink.net
mailto:Christian.Hein@BremenPORTS.de
mailto:luis.lopez@siport21.com
mailto:riversen@sgh.com
mailto:EJ.Broos@portofrotterdam.com
This paper sets out a brief description of the data provided and the data sources. The types of 
vessels covered include: 
• Oil & Product Tankers 
• Chemical Tankers 
• LNG & LPG Gas Carriers 
• Dry Bulk & Ore Carriers 
• Container Vessels 
• General Cargo vessels 
• Specialist Cargo Vessels (e.g., aggregate carriers, Livestock Carriers) 
• Refrigerated Cargo Carriers 
• Car Carriers 
• RoRo & RoPax vessels 
• Cruise Ships 
• Ferries 
• Large Fishing Vessels 
• Large Yachts (powered & sail) 
Naval vessels, construction vessels, barges and special purpose vessels are not included in the data 
table. It is anticipated that data for these vessels is better sourced from the specific clients. Inland 
waterway vessels are included in PIANC InCom WG16 (1996). 
The design of oceangoing vessels changes over time to meet the needs of international seaborne 
trade and the pressures of transport economics. The pace of change is modest but there are 
exceptions: 
• Global movement of manufacturing to low cost labour markets has driven significant 
changes in container shipping. 
• Chinese demand for iron ore and coal post 2000 has driven an increase in the size and 
number of large bulk carriers. 
In the future we may expect further disruption driven by climate change actions, alternative fuels, 
cold ironing in ports and the introduction of new energy products, such as ammonia and hydrogen, 
in increasing quantities. 
DATA SOURCES & PRESENTATION 
The primary data source for vessel dimensions is the IHS Seaweb data base – previously known 
as Lloyds Register of Shipping. 
Secondary sources include; 
• Small scale vessel plans. Approximately 500 were available. 
• Various internet web data sources. For example; vesselfinder, aukevisser, balticshipping. 
• Private Data Collections. 
All tabulated data is in a single electronic spreadsheet accessible via the PIANC website. Data is 
sorted by ship type and the size in logical steps that reflect the distribution of vessels in the world 
fleet. 
DWT is the primary size indicator except where this is impractical. GT is used for cruise liners, 
ferries & fishing vessels. Size selections are based on the fleet size distributions. 
DATA INCLUDED IN THE TABLES 
The tables are intended to provide reliable information on vessel dimensions. Some of these are 
shown in Figure 1. 
 
Figure 1: Key Vessel Dimensions diagram 
The vessel data provided in WG235 includes: 
Key Dimensions 
• Maximum Dimensions 
 Length overall (LOA), length between perpendiculars (Lbp), beam, and draught. 
 These define an envelope of planning limits. They are not real ships. 
• Typical Dimensions for a given size 
 LOA, Lbp, B, T and depth for a common vessel in the group. 
Design Displacement (Δ) 
• A nominal P90 value estimated on the available displacement data. Displacement data is 
incomplete so statistical analysis is not considered fully reliable. The value chosen 
approximates a characteristic high value for design purposes. 
• Section 3 of WG235 provides two other alternate means of estimating displacement. 
Air Draft 
• IHS Seaweb air draft data is incomplete, so a conservative approach is used to look for 
higher values in the next larger vessel size. If a lower vessel size air draft is greater, that 
greater value is adopted. The data is suitable for preliminary planning but must be cross 
checked by other means if the air draft is critical. 
Cargo Capacity 
• Cargo capacity is measured in tonnes, m3. TEU, cars, GT, passengers, etc. to suit the 
vessel type. 
Block Coefficient (Cb) 
• Ratio of submerged ship volume compared to the volume of the circumscribing block. 
Laden Draught Draught in Ballast 
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LBP Length between perpendiculars 
Summer Loaded Water Line 
Projected Wind Area 
• Lateral and longitudinal wind areas for fully laden and ballast conditions are included in 
the main table. For the lateral area, the centroid of the lateral area is expressed as a 
percentage of the LOA from stern. 
Typical mooring winch numbers 
Parallel side length and location from bow(Flat hull length) 
• Data is provided for tankers only, expressed as a percentage of the LOA. 
• Reliable data for other vessel types was not available at the time of publication. 
Manifold location 
• The centre of the manifold location, a percentage of the LOA from bow, is included for 
tankers and gas carriers. 
Figure 2 below is a part extract from the main table. 
Figure 2: WG235 Data table extract for Crude Oil Tankers and Large Product Tankers 
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ACCURACY, VARIABILITY & LIMITATIONS OF THE DATA 
Dimensions of the IHS Seaweb data have a high expectation of reliability. Nevertheless, there is 
variation between vessels of the same nominal size due to design differences. For example, all the 
container vessels listed below are ≈ 110,000dwt. 
• 300m x 48.2m x 14.5m draught 
• 337m x 45.6m x 14.5m draught 
• 349m x 42.8m x 15.0m draught 
The variability in the dimensions is not so much a question of accuracy, but of design criteria. 
Different sailing geographies, classification societies, owner’s requirements, construction types, 
design speed, etc., lead to important differences in dimensions for the same ship size. 
Hull shapes vary from one vessel design to another so Cb is also variable. The variationis greater 
for smaller vessels. For vessels between the nominated sizes linear interpolation will provide a fair 
but less accurate guide. 
Displacement is based on the IHS Seaweb data. This covers only 20 to 40% of vessels so it is 
impractical to speculate on confidence values. The values provided are the writers estimate of a 
“Nominal P90” value. 
Ballast draft is variable, so it is based on a portion of the summer line draught (SSL) over the likely 
range of values. For dry bulk carriers a minimum and maximum value are provided. The minimum 
values are based on 90% prop immersion. The maximum value of 50% of the SSL draft assumes 
the ballast on board is 40% of the DWT. Ballast draft is discussed in more detail in the guideline 
text. 
Mooring winch numbers are only a typical guideline for planning purposes or a preliminary static 
mooring analysis. The detail is not sufficient for dynamic mooring analysis where specific ship 
data should be sort. 
SPECIAL CARGO VESSELS 
Special cargo vessels are excluded from the general category data as they have characteristics that 
can distort the general purpose vessel data that is covered by the tables. For these vessels scatter 
plots of LOA, beam and draught are provided as a guide. 
The special cargo vessels covered by WG235 are listed below: 
Livestock Carriers. 
General Cargo Variants: 
• Cargo / RoRo. 
• Deck Cargo. 
• Open Hatch Cargo. 
• Cargo / Passenger (small vessels