The Art of Dredging

Dredging and shipping

Book review  "DP Operator's Manual" by capt. D. Bray


 Dynamic positioning technology is on the rise in the dredging industry. Most newbuilt large trailer dredgers are installed with DP/DT(*) systems. 

"DP Operator's manual", written by Captain D. Bray, FNI and published by The Nautical Institute spring 2008. Price: 20 GBP, not including mail.

The Nautical Institute acts as a regulating body for DP operator courses and accreditation of DP course providers. Captain Bray was instrumental in this development.

"DP Operator's Manual" contains 122 pages, A5-format,  (it's more a booklet than a book) but is nevertheless densely packed with info on DP-operations, with chapters on redundancy, operational planning, position referencing, power management, and human factors.

The whole book is written with a broad experience and is knowledge-sharing on every page.

The book is not an introduction to dynamic positioning, and the reader must be knowledgeable with DP-basics before reading this. The text is -at least- one level up from DP-basics.

If you get involved with DP-operations: very much worth reading.


Marc Van de Velde


(*) DP/DT: Dynamic Positioning / Dynamic Tracking

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