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Snowden McLeod and Associates

Snowden McLeod and Associates: leaders in the field of marine surveying, investigations and oil tanker consultancy, valuations and surveying. Our independent marine specialists are actively involved with oil tanker conversions from the start of a project to its completion. This process can take several years, and often involves up to five of our highly qualified and experienced surveyors.

Two recent major consultancy projects involved FPSO conversions for oil majors Shell and Chevron

FPSOs can be derived from conversion of oil tanker vessels or can be built specially for the application. Snowden McLeod and Associates have been involved in two full FPSO conversion projects to date for Chevron and Enterprise Oil/Shell. Both projects ran over several years with our surveyors working as required to ensure everything was delivered within a complex and constantly changing schedule. Read More.

Snowden McLeod and Associates will also provide our expertise when buying or selling an oil tanker and have been involved with projects such as single hull and double hull oil tanker conversion, as well as the conversion of an existing oil tanker.

Case Study

Conversion of a Very Large Crude Carrier (VLCC) to a Floating Production Storage and Offloading Vessel (FPSO) on behalf of an oil major.

Prior to the purchase of the VLCC Snowden McLeod and Associates were involved in the documentary review stage, during which we checked:

  • Classification records for potential candidate ships and prepared reports summarising our findings
  • The technical requirements of the tender document in relation to ship inspection and evaluation both pre and post contract
  • The physical inspection of four short listed candidate oil tanker vessels and quantification of their current structural and mechanical condition including estimates of probable steel repairs required for each vessel
  • The bid evaluation process to help compare the different shipyard bids and evaluate them particularly looking at areas of weakness with respect to the yard's structural inspection and evaluation procedures

Post purchase we carried out the following:

  • Reviewed the initial ABS SafeHull A study and gave input to areas requiring clarification
  • Attended the shipyard prior to arrival of the vessel to assist with the establishment of site inspectors and reporting structures
  • Liaised with the primary contractor for all structural inspection and modifications
  • Conducted detailed structural inspections of the entire vessel in association with the selected Classification Society
  • Reviewed the ABS SafeHull B study and DLA results and input to areas requiring clarification
  • Remained on site until completion of all structural inspections and modifications


Our surveyors are all qualified and experienced with a wealth of expertise dealing with FPSO conversions and other oil tanker related matters. We work with integrity and discretion to ensure that all work is to the highest standards.

Entrust us with your next project and you will not be disappointed

Other oil tanker services offered by Snowden McLeod and Associates Ltd include: safety inspections, cargo expediting for maximum pumping rates and cargo expediting for operational prudence, port feasibility studies, pipeline inspections, liquid cargo contamination investigation, oil spillage investigation, ISM audits, onboard operational training and expert witness experience in oil tanker related litigation.

Oil Tanker Services Summary:

  • Reviews & ship condition surveys as part of FEED
  • Steel weight repair estimates
  • Steel structural defects identification
  • Detailed ship inspection plans; Health and Safety reports and QA procedures etc
  • Reviews of proposed structuring modification drawings
  • Shipyard on site survey and inspections
  • Oversee all structural testing, including air pressure and stagger tests
  • Liaison with attending Classification Society as Owners’ Representative for all certification surveys
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Contact Details

Tel:  +44 (0) 23 9251 0444
Email: info@snowdenmcleod.com


Snowden McLeod and Associates Ltd
E3-E5 Heritage Business Park, Heritage
Way, Gosport, Hampshire
PO12 4BG

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Registered Office: Snowden McLeod and Associates Ltd. E3-E5 Heritage Business Park, Heritage Way, Gosport, Hampshire PO12 4BG
No:1754477 VAT No: GB 382 7128 41
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