ADDITIONAL MILITARY LAYERS - United Kingdom Hydrographic ...
ADDITIONAL MILITARY LAYERS - United Kingdom Hydrographic ...
ADDITIONAL MILITARY LAYERS - United Kingdom Hydrographic ...
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Additional Military Layers<br />
Environment, Seabed and Beach Product Specification<br />
Attribute Definition Values<br />
Absolute Horizontal<br />
Accuracy<br />
Absolute Vertical<br />
Accuracy<br />
Access Restriction<br />
The positional error estimate for a<br />
single point, relative to the<br />
specified spatial reference system<br />
(AML)<br />
The vertical error estimate for a<br />
single point, relative to the<br />
specified spatial reference system<br />
(AML)<br />
Restrictions on access to the beach<br />
from the sea.<br />
Value: min 0<br />
Units: metres or feet<br />
(units must be defined)<br />
Resolution: 0.1 (metres or ft)<br />
Value: min 0<br />
Units: metres or feet<br />
(units must be defined)<br />
Resolution: 0.1 (metres or ft)<br />
Text String<br />
Approach<br />
Attenuation<br />
Bearing<br />
Bottom Feature<br />
Classification<br />
(AML)<br />
Description of approach including<br />
direction and potential hazards.<br />
(AML)<br />
Reduction in intensity of sound<br />
waves.<br />
(Adapted from IHO -Dictionary<br />
S -32, 5 th Edition, 292)<br />
The horizontal direction of one<br />
terrestrial point from another,<br />
expressed as the angular distance<br />
from a reference direction.<br />
(IHO Dictionary, S -32, 5th<br />
Edition, 435.)<br />
Classification of naturally<br />
occurring bottom features on the<br />
seabed.<br />
(AML)<br />
Text String<br />
Value: min 0<br />
Unit: decibels/metre<br />
Resolution: 0.1<br />
Value:<br />
0.0_ - 359.9_<br />
Unit: degree (_)<br />
Resolution: 0.1<br />
- Berm: A narrow, raised embankment<br />
along a beach formed by the deposit<br />
of material by waves and marks the<br />
limit of high tides. (Adapted from<br />
IHO <strong>Hydrographic</strong> Dictionary, S -32,<br />
5 th Edition, 468)<br />
- Fault line: A break of shear in the<br />
earth’s crust with an observable<br />
displacement between the two sides<br />
of the break, and parallel to the end<br />
of the break. (IHO <strong>Hydrographic</strong><br />
Dictionary, S -32, 5 th Edition 1778)<br />
- Ledge: A rocky formation<br />
continuous with and fringing the<br />
shore. (IHO <strong>Hydrographic</strong><br />
Dictionary, S -32, 5 th Edition, 2707)<br />
- Highly Reflective Patch: Highly<br />
reflective patch of seabed found by<br />
side scan, no contact found using<br />
MM sonar. (AML)<br />
- Magnetic Anomaly: An anomaly of<br />
the magnetic field of the earth,<br />
extending over a relatively small<br />
area, due to local magnetic<br />
influences. (IHO <strong>Hydrographic</strong><br />
Dictionary, S -32, 5 th Edition, 2874)<br />
- Pockmark: Small depression on the<br />
seabed. (AML)<br />
Page 48<br />
Version 1.0
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