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  1. bjsmarine

    boat power ( hybred ) efficiency Hyds.- electrial (AC or DC )

    thank you gentlemen for your replys. most heplful info. and all will be taken in carefull consideration. Unclesyd. As to why , The boat that is being considered to be built the main purpose is to get to a given station in a timely fashion and then stay on station with out aid of a complex...
  2. bjsmarine

    boat power ( hybred ) efficiency Hyds.- electrial (AC or DC )

    Gentlemen -- Me again with my dumb questions --- But again I have been asked a question that has me baffled. As I once explained I am a mechanic not an engineer so please be gentle. My latest query -- If one were to rig a modest power plant in a vessel {under 300 HP.} and wanted to go the...
  3. bjsmarine

    ultrasonic antifouling. Is it effective ?

    Thanks berkshire Nice to have suspicion confirmed. All I could find was lots advertising and a few questions. Cloa`s point Im sure. For over a $1000. system may be good for giving clams a headache. Thanks for your time. As a tech. as opposed to engineer I have more questions than answers...
  4. bjsmarine

    ultrasonic antifouling. Is it effective ?

    GEE - great idea . Thanks
  5. bjsmarine

    ultrasonic antifouling. Is it effective ?

    I have been asked about ultrasonic antifouling , Its effectivness, cost and otherwise. having never even heard about it before am now curious about the process. Im hopeing for some info. about ultrasonic antifouling. The theory , good points , bad points , any experance`s with it...
  6. bjsmarine

    fire retardant or low flame spread coatings over foam.

    Hopefully I am In the right forum, & hopefully I can get some direction. The problem is to find a solution regarding fire supression in a boats engine room. The matter at hand is the fact that expandable foam was injected into adjacent compartments both sides of the engine room -for floation and...
  7. bjsmarine

    corrosion accelerated with use of block heaters ?

    heat exchanger is bronze casting with copper tubing. problems are in the casting area. thanks .
  8. bjsmarine

    corrosion accelerated with use of block heaters ?

    Any thoughts about increasted corrosion in the saltwater side of heat exchangers, of the typical marine diesel cooling system - that that uses block heaters to keep the vessel\s engines in a state of standby

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