"Ship Performance Assessment Based on Observed Fouling" - Free Demo

"Ship Performance Assessment Based on Observed Fouling" is a semi-empirical method that provides instantly a rough estimation of the effect of fouling in ship performance after an in-water survey by using only a brief description of findings from the divers and/or a few representative underwater photos.

The methodology allows you to:

Identify the 5 main categories of fouling

Estimate the expected power increase due to observed fouling

Estimate the expected additional fuel consumption due to fouling

Predict the expected effect of fouling after X months

Manage hull cleaning scheduling more effectively

The existing guidelines regarding the management of biofouling, lack the overall connection between the visual inspection (e.g. underwater inspection), the performance prediction (e.g. estimation of added Power/Fuel Consumption) and the relevant action (e.g. hull cleaning). MEPC's "Guidelines for the control and management of ship's biofouling to minimize the transfer of invasive aquatic species" offers a simple methodology that links the visual aspect with the required action based on a fouling rating, but doesn't offer much guidelines regarding the expected performance prediction based on the observed biofouling. On the other hand, ISO 19030 focuses on the analysis of high-frequency data in order to estimate the performance of the vessel but doesn’t offer much guidelines on how this performance prediction is connected to the observed fouling. The methodology presented in the book attempts to bridge the gap between these two approaches. It doesn't provide the accuracy of the ISO standard, but it provides reliable rough estimations of the performance of a ship within seconds, by utilizing only underwater photos (no other information/data/logs required).

This simple methodology allows the monitoring of the performance of your vessel relying only on the observed condition of the hull. The effect of hull fouling in the performance of the vessel can be estimated after underwater inspections, giving a clearer picture of the performance of the vessel in time.

The demo is a free eBook that utilizes the developed methodology to estimate the effect of the observed fouling in the performance of a tanker. It includes a brief description of the methodology and case studies with step-by-step calculations.

The demo includes the "1-Minute Hull Fouling Assessment Spreadsheet". The calculations that are presented in the book are condensed into one simple spreadsheet that calculates all the necessary parameters instantly with the minimum possible input.