Koen Wartena

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  • Koen Wartena
    Participant
    NL
    Hi William,
    Commercial yachts are intended to carry a maximum of 12 to 36 passengers. The number depends upon the registry, and are subject to stricter safety requirements.
    This is also why a lot of yachts can only carry up to 12 guests, just because it is way easier to comply with the regulations.
    Let me know if this helps!
    • This reply was modified 3 years, 3 months ago by Koen Wartena.
    Koen Wartena
    Participant
    NL
    Hi AKX,

    I always use the standard rule that the total average cost per year for a yacht is 10% of the price of the yacht. I am not sure if this is correct but it can give an idea.

    Koen Wartena
    Participant
    NL
    There are really so many things to keep in mind when choosing this. Commercial yachts can benefit from interesting advantages but need to comply with stricter rules than private yachts which can not benefit from any VAT exemption.

    Would be good to check the book for more information, it is very well described in chapter 12.

    Koen Wartena
    Participant
    NL
    IACS stands for International Association of Classification Societies

    The majority of reputable classification societies are a member of the International Associates of Classification Societies.

    Koen Wartena
    Participant
    NL
    Yes! Here’s how to read this Lloyd’s classification: ✠100A1 SSC Yacht Mono (P) G6, (✠) LMC, UMS, CCS

    ✠                   This means that the ship was built under special survey.

    100                 Means it is a steel ship (‘will last 100 years”) fit for sea-going service.

    A                     Means the ship has been built into class in accordance with Lloyd’s Register’s Rules and Regulations, the ship is maintained in good and efficient condition.

    1                      Means that the ship has onboard anchoring and mooring equipment in good and efficient condition.

    SSC                 Means Special Service Craft which is the category into which the ship has been classified by Lloyd’s.

    (P)                   Means that the yacht is built in accordance with SOLAS 1974 for subdivision and fire protection, detection, and extinction in passenger ships not carrying more than 36 passengers.

    Mono            Is the type of Special Service Craft, mono-hulled yacht.

    G6                   Means Service Group 6, the yacht has no service area restriction and is “ocean-going”.

    LMC               Is Lloyd’s Machinery Certificate meaning that the machinery has been installed and tested under Lloyd’s special survey.

    UMS               Means Unmanned Machinery Space. The control engineering equipment has been arranged, installed and tested in accordance with Lloyd’s rules permitting the craft to be operated with the machinery spaces unattended.

    CCS                 Means Centralized Control Station, the control engineering equipment has been arranged, installed, and tested in accordance to Lloyd’s rules. The yacht may be operated with continuous supervision from a centralized control station, normally wheelhouse.

    Koen Wartena
    Participant
    NL
    Hi William,
    The height of ceilings depends on the length of the boat, but as an example, on a 50m (164ft) yacht the average ceiling height is approx. 2.10m (6.9ft), and in some cases, reaching 2.20m (7.2ft). Superyacht design should almost always seek to combat the notorious low ceiling environment, which can be as low as two meters.
    Koen Wartena
    Participant
    NL
    The price for a full design package (exterior and interior) is about 2/3th for the interior design and 1/3th for the exterior design. Although, the price can also depend on the capacity a designer has, the scope and scale of the project.
    Koen Wartena
    Participant
    NL
    Hi James!
    Software such as CAD and Rhino are used to create 3D models and these become the basis for all the tweaks at various stages. It’s still important to sketch with a pencil at the start as it’s the quickest and easiest way to sketch the basic shapes and lines of a yacht.
    Although programs can replace drawing with a pencil as well these days, depending on the designer.
    Koen Wartena
    Participant
    NL
    Hi William,
    The fee is not an exact science. It varies based on the complexity of the project. Usually every area (guest or crew) has a different cost presented in euros per square metre. A guest area would have a higher cost for example 25,000 euros per square metre, whereas a crew area would have 9,000 euros per square metre.
    • December 17, 2020 at 3:10 pm
    • in reply to: SCR Unit
    Koen Wartena
    Participant
    NL
    Yeah! The efficiency of the SCR unit depends on three important factors. Firstly, the temperature of the exhaust gasses. Secondly, the type and volume of the catalyst. And third, the control strategy, this determines the amount of urea that is mixed with the exhaust gasses.
    • December 17, 2020 at 3:06 pm
    • in reply to: SCR Unit
    Koen Wartena
    Participant
    NL
    Hi James,
    This depends on a lot of factors. However, to give you an idea; I know that a company called Xeamos has produced a SCR unit for a 1088 kW engine. The dimensions of this unit are 3,1 x 1 x 1 meter.
    Koen Wartena
    Participant
    NL
    If I remember it correctly she has two banks of 1000 kWh batteries.
    Koen Wartena
    Participant
    NL
    Hi James!
    I believe they are just very busy checking all the documents and drawings from a lot of yacht designers and shipyards. In some periods they are just too busy (or not enough employees) to check all documents fast, it needs to be done right the first time so they take their time.
    • This reply was modified 3 years, 4 months ago by Koen Wartena.
    Koen Wartena
    Participant
    NL
    The structural engineer’s work directly affects the weight, space, and styling of a yacht. Strength, stiffness, resistance to fatigue, cracking, as well as corrosion and resistance, are all areas of focus. Typical structural design activities will cover a broad spectrum of activities.

    The book explained it very well as well!

    Koen Wartena
    Participant
    NL
    Hi James!
    I believe it can serve for about a day as power supply when at anchor and sail for about a half-hour on its electric installation.
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