Welcome!

Speed Afloat, Powered by France Helices

John Miele

Subscribe to John Miele: eMailAlertsEmail Alerts
Get John Miele via: homepageHomepage mobileMobile rssRSS facebookFacebook twitterTwitter linkedinLinkedIn


Top Stories by John Miele

From the Business Green Blog: But a report published this week by the European Commission’s Joint Research Centre (JRC) appeared to torpedo the EU’s plans, warning that EU countries would be unable to enforce restrictions on ships flying flags of convenience from outside the bloc. Moreover, international shipping law affirms that “states shall not discriminate in form or in fact against vessels of any other state”, which means nations attempting to prevent non-compliant ships from docking or passing through territorial waters could face legal action. “There is currently no strong legal basis for the EU to exercise extra-territorial jurisdiction, and this is likely to give non-EU states and industry bodies grounds for challenging carbon emissions reduction measures adopted by the EU for maritime transport,” the report concludes. It goes on to analyse the best metho... (more)

Deltamarin to help develop EEDI

From Digital Ship: The European Maritime Safety Agency (EMSA) has awarded a contract to Deltamarin for a study on tests and trials of the Energy Efficiency Design Index (EEDI), as developed by IMO. The main objective of the contract is to provide EMSA with a technical study on the EEDI, in order to refine the EEDI application for certain categories of RoRo ships (volume and weight carriers) and to identify the potential application of the EEDI or any alternative method to improve energy efficiency of purpose built vessels from a technical and design point of view. The Energy... (more)

Auto trim

  When France Helices installs an SDS on a vessel, we always include operator training as paart of the package. Operating a vessel at 30 knots is a very different skillset than operating a vessel at over 50 knots. Why? Well, there are many reasons, but one of the things that often confuses crews new to the SDS is the concept of drive trim. The trim of the drives is critical when operating the SDS. Remember in an earlier article that we stated that one of the functions of surface drives is to provide lift. The SDS literally lifts the stern of the vessel out of the water, thus al... (more)

What is the difference between cavitation and electrolysis?

The following paper was presented by France Helices’ president a while back. It discusses the difference between cavitation and electrolysis and the impact of both on propellers and propulsion. These two phenomena are often confused and it is important to learn to recognize the difference between them, so that the cause of problems can be determined and adequate fixes can be made. We have translated this version from the original French version. We hope you find it interesting. Introduction I have often had the opportunity to see during my career that there was some blurring in... (more)

Welcome to Tier II NOX Regulations

On January 1, the MARPOL Tier II NOX regulations went into effect. From this date onward,  marine diesel engines may emit no more than  7.7~14.4.0 g/kWh of NOX, depending on rating. Tier III goes into effect on January 1, 2016, five years from now, with NOX limits of  g2.0~3.4 /kWh. Though Tier II requirements have been known for a while, very little was written about the implementation date of the regulations. Some vessels are “grandfathered” into the regulations, whereas most other must comply. Some ship owners are letting the engine maker deal with the problem, taking the op... (more)