| |
Data in
What you will need to provide… |
The process
To work with Maxwell or others
to do… |
Data out
The result of the information and the
analysis process will be… |
| Choose criteria |
1 Owner’s requirements for certification.
If there are no formal requirements the
consideration of one or more standards
to be used as a guide is recommended. |
2 Use rules as selected by the owner or
investigate various certification bodies
such as Lloyds, DNV, ABS. Alternatively
consider other advisory standards such
as Coastguard or other local authorities. |
3 The classification body and ruling
type to adopt as a guide or a requirement
for the project. |
| Size the application |
4 Gather the following information:
- Classification body
- Ruling type
- Side profile
- Yacht displacement
- Front profile
|
5 The Equipment Number (EN) is a single
figure relating to the physical parameters
of the yacht. Use the chosen standard to
determine the Equipment Number. This in
turn dictates the yacht’s equipment
strength and capability requirements. |
6 You now have the very important
Equipment Number (EN). |
| Size anchor and chain |
7 With the Equipment Number proceed
to determine the chain and anchor details. |
8 Typically the Equipment Number is
first used to calculate the anchor and chain
size. The anchor is defined by weight for
a particular type, commonly High Holding
Power (HHP). The chain is defined by size,
material grade (commonly U2) and length. |
9 The following items are now defined:
- Anchor type and weight
- Chain size and grade
- Chain length
|
| Windlass requirements |
10 Using the three key parameters
- Anchor type and weight
- Chain size and grade
- Chain length
The windlass and anchoring accessories
can be specified. |
11 Compare the demand of the
classification rule and the total load of
chain and anchor and work to the most
stringent one. Maxwell recommends
increasing these requirements in some
circumstances. |
12 The following windlass criteria are
now understood:
- Static holding
- Short term pull
- Long term pull
|
| Windlass selection |
13 Knowing the installation specific
requirements including the static holding,
short term pull, long term pull and the
type of power available (hydraulic or
electric), the correct windlass and gear
selection can be made. |
14 Select the Maxwell Windlass and
ancillary gear that suits the installation
and functional requirements of the project
whilst complying with the performance
prerequisites that have been derived. |
15 Now the Maxwell windlass and gear
data, to meet the vessel’s requirements,
is available for installation details to be
finalised. |
