Britannia P&I Club has published loss prevention guidance on the consequences that need to be considered regarding hull fouling.
Hull fouling refers to a condition when marine organisms such as barnacles, algae, and mussels attach themselves to a ship’s underwater hull surface area. When operating in tropical or seasonal tropical waters the higher temperatures and sunlight provide ideal conditions for the rapid growth of marine organisms, particularly when the ship is stationary at anchorage for a longer period. Furthermore, during seasonal tropical periods, ocean currents transport nutrients from deeper waters to the surface in coastal areas, promoting the growth of photosynthetic organisms. Continue reading “Understanding hull fouling with Britannia P&I Club”
Marine surveyors and boat owners are regularly heard to say there is a minimum 4.0mm of hull thickness required at time of survey of a steel narrowboat. Some brokers even publish videos of such information, with some surveyors enforcing it (Whilton Marina, 2012 and 2016). Boaters are subject to it and repair often follows. In a recent article, Geoff Waddington (2021) explains there is confusion in the industry about wastage limits, and consequently acceptable residual hull plate thicknesses, and opinions among surveyors ‘vary wildly’, with some quoting 3mm acceptable minimum plate thickness, others using percentage loss. This short paper explores what a standardised acceptable limit for diminution, and therefore residual steel plate thickness for narrowboats, could be. It describes a variety of methods of calculating the design plate thicknesses (scantlings) and the minimum acceptable residual plate thickness. In doing so, this paper aims to serve as a guide for inland waterways marine surveyors, boat owners, repairers, and insurers alike. 
It seems we have gone full circle. Cargo ships powered by sail were lost to us a century or more ago, and to the current generation such vessels are regarded as outmoded transportation from a bygone era. But now they are back, more sophisticated and sustainable than ever. Recently I read about the Anemos, which has claimed the title of the world’s largest sailing cargo ship as she made her inaugural voyage from Concarneau, South Brittany, France. 
Saudi Red Sea Authority yachting regulations have been written and published for the first time by the authorities.
This is a remarkable story, one of my favourites for ages, which fortunately had a happy ending. What caught my eye specifically were the details of the good Samaritan vessel – a floating sauna – which came to the aid of a sinking Tesla. I must have led a sheltered life as I was completely unaware that such craft existed and that they are indeed popular in Norway and can be hired by the hour! And being a skipper of a floating sauna sounds like a very cool job – never getting cold on the job either! 