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Welcome to MarineWiki, the definitive Marine Encyclopedia that experts edit. 182 articles in English

Naval Architecture Marine Engineering Offshore Engineering All portals

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Contents 1 Introduction 2 Description 3 Synopsis 4 Forum 5 Updates 6 Sponsors 7 Today's featured article

Introduction

MarineWiki is our ambitious initiative to aggregate the extensive know how of our network of professionals in the Marine Industry. This encyclopedia of the Marine Industry will serve as a reference for students as well as practicing professionals.

Description

Naval architecture is a branch of engineering that deals with the design and construction of ships and other marine structures. This engineering is a mix of art and science. Proposing the initial, conceptual design that meets many conflicting requirements is largely art; analyzing and refining it applies techniques based on sound scientific principles.

One of the basic goal of a naval architect is to assure that the vessel will survive any reasonable weather when handled with reasonable prudence, and yet still perform its function efficiently.

Sabyasachi Mohanty, a practicing naval architect defines, " ...when the intricate art of architecture intertwines with the fanciful imaginations of marine structures and economics, what evolves out of this exotic culmination is naval architecture."

On a lighter note, boat building is considered one of the oldest professions along with pottery and prostitution.

Marine engineering is a branch of engineering that deals with the design, installation and even operation of marine machinery. In shipbuilding, marine engineers deals with the design of all machinery systems, in most cases along with the naval architect.

Synopsis

An attempt has been made to cover all the aspects of Naval architecture and Marine engineering in this site through various sub-sections.

• TIME LINE - a detailed account of the history of ships and shipping
• SHIPS - all the kinds of ships and vessels are described
• SHIP DESIGN - a detailed description of the design of various types of ships
• SHIP CONSTRUCTION - a detailed description of the construction of ships from scratch
• SHIP REPAIR - description of ship repair after delivery in drydock as well as out of it
• SHIP CONVERSION - describes various conversion process
• INSPECTIONS - our experiences as an owners representative at new shipbuilding projects
• OFFSHORE - the industry and its description
• DESIGN NOTES - our experiences in designing
• GENERAL INFO - Information about the marine industry
• RULES & REGULATIONS - provides an explanation and the logic behind the rules. Application of the rules is mentioned in the DESIGN NOTES
• PROJECTS - a list of interesting projects pursued by Team MarineWiki
• GREATS - to facilitate all aspiring Naval Architects and Marine engineers to get inspiration, this section contains the biography of some leading lights

One last word. If you feel that you have benefited from the information provided, please make sure that you share some of your knowledge to others through this site.

Forum

We have launched a new forum to discuss on the various aspects of naval architecture, marine engineering and ocean engineering. You can access this forum in Marinewiki Forum

Updates

You can follow us in

Sponsors

We are indebted to our sponsors for providing us funds to cover the hosting charges for the site so as to keep this service free. Our sponsors include:

• Navgathi Marine Design & Constructions

Today's featured article Contents 1 Allowable marine fuel sulphur 2 Regulatory requirements 2.1 SECA and ECAs 2.2 European Union (EU) Waters 2.3 Global Allowable marine fuel sulphur Regulatory requirements SECA and ECAs Implementation Date Reference Statutory Body Max. Sulphur by mass Applicable area Target Consequences Ship owner's options 19 May 2006 IMO 1.5 % Baltic SECA 11 Aug 2006 EU 1.5 % Baltic SECA 11 Aug 2007 EU 1.5 % North Sea + English Channel SECA 21 Nov 2007 IMO 1.5 % North Sea + English Channel SECA 1 Jul 2010 IMO Annex VI IMO 1 % Emission Control Areas (ECAs) Sailing and new ships Possibly equipment adaptation, or exhaust gas purification. Higher voyage costs. (i) Use bunkers with less than 1 % sulphur (ii) Use bunkers with greater than 1 % sulphur together with scrubbers (iii) Use LNG as fuel 1 Jan 2015 IMO Annex VI IMO 0.1 % Within ECAs Sailing and new ships Higher voyage cost, possible equipment adaptation or exhaust gas purification (i) Use bunkers with less than 0.1 % sulphur (ii) Use bunkers with greater than 1 % sulphur together with scrubbers (iii) Use LNG as fuel European Union (EU) Waters Applies to all types of marine fuels used by ships at berth in EU ports unless an approved emission abatement technology is employed or shore power is available. Also applies to both main and auxiliary boilers. Implementation Date Reference Statutory Body Max. Sulphur by mass Applicable area Target Consequence Ship Owner's options 1 Jan 2010 2005/33/EC EU 0.1 % Within all EU Ports Sailing and new ships Possible equipment adaptation, higher voyage costs (i) Change to 0.1% sulphur in bunker tanks at berth and in canals (ii) Use LNG as fuel (iii) Use of cold ironing Global Implementation Date Reference Statutory Body Max. Sulphur by mass Applicable area Target Consequences Ship owner's options Prior to 1 Jan 2012 IMO Annex VI IMO 4.5 % Globally 1 Jan 2012 IMO Annex VI IMO 3.5 % Globally Sailing and new ships Perhaps higher voyage costs (i) Change to 3.5 % sulphur in bunkers (ii) Use LNG as fuel 1 Jan 2020 IMO Annex VI IMO 0.5 % Globally (subject to review in 2018) Sailing and new ships Perhaps higher voyage costs (i) Low-sulphur fuel or conventional fuel with scru