OSMvalue

symbol

description

cone_pointup


is where the vertex points up

cone_pointdown

cone, point down

is where the vertex points down

sphere

sphere

a body the surface of which is at all points equidistant from the centre. (The New Shorter Oxford English Dictionary. 1993. vol 2) spheres are commonly used as International Association of Lighthouse Authorities  IALA topmarks (safe water).

2spheres

two spheres

two black spheres are commonly used as an International Association of Lighthouse Authorities  IALA topmark (isolated danger).

cylinder

cylinder

a solid geometrical figure generated by straight lines fixed in direction and describing with one of point a closed curve, especially a circle (in which case the figure is circular cylinder, it's ends being parallel circles). (The New Shorter Oxford English Dictionary. 1993. vol 2). cylinders are commonly used as International Association of Lighthouse Authorities  IALA topmarks (lateral).

board

board

usually of rectangular shape, made from timber or metal and used to provide a contrast with the natural background of a daymark. The actual daymark is often painted on to this board.

xshape

xshape

having a shape or a crosssection like the capital letter X. (The New Shorter Oxford English Dictionary. 1993. vol 2) an xshape as an International Association of Lighthouse Authorities  IALA topmark should be 3 dimensional in shape. It is made of at least three crossed bars.

upright_cross

upright cross

a cross with one vertical member and one horizontal member, i.e. similar in shape to the character '+'.

cube

cube

a solid contained by six equal squares; a regular hexahedron (The New Shorter Oxford English Dictionary. 1993. vol 2) cube, point up: a cube standing on one of its vertexes.

cube_pointup

cube, point up

a cube standing standing on one of its vertexes.

2cones_point2point

2 cones, point to point

2 cones, one above the other, with their vertices together in the centre.

2cones_base2base

2 cones, base to base

2 cones, one above the other, with their bases together in the centre and their vertices pointing up and down.

rhombus

rhombus

a plane figure having four equal sides and equal opposite angles (two acute and two obtuse); an oblique equilateral parallelogram. (The New Shorter Oxford English Dictionary. 1993. vol 2)

besom

besom

a bundle of rods or twigs. (The New Shorter Oxford English Dictionary. 1993. vol 1) perch: a staff placed on top of a buoy, rock or shoal as a mark for navigation. (IHO Dictionary, S32, 5th Edition, 3734)

perch

perch

a staff placed on top of a buoy , rock or shoal as a mark for navigation. (IHO Dictionary, S32, 5th Edition, 3734)

flag

flag

a flag mounted on a short pole.

sphere_over_rhombus

shpere over rhombus

A sphere located above a rhombus.

square

square

a plane figure with four right angles and four equal straight sides (The New Shorter Oxford English Dictionary. 1993. vol 2)

rectangle

rectangle

a plane figure with four right angles and four straight sides, opposite sides being parallel and equal in length (The New Shorter Oxford English Dictionary. 1993. vol 2) horizontal rectangle: where the two longer opposite sides are standing horizontally. vertical rectangle: where the two longer opposite sides are standing vertically.

horizontal_rectangle

horizontal rectangle

where the two longer opposite sides are standing horizontally.

vertical_rectangle

vertical rectangle

where the two longer opposite sides are standing vertically.

trapezium

trapezium

a quadrilateral having one pair of opposite sides parallel. (The New Shorter Oxford English Dictionary. 1993. vol 2) trapezium, up: which stands on its longer parallel side. trapezium, down: which stands on its shorter parallel side.

trapezium_up

trapezium up

which stands on its longer parallel side.

trapezium_down

trapezium down

which stands on its shorter parallel side.

triangle

triangle

a figure having three angles and three sides. (New Shorter Oxford English Dictionary. 1993. vol 2)

circle

circle

a perfectly round plane figure whose circumference is everywhere equidistant from its centre. (The New Shorter Oxford English Dictionary. 1993. vol 1)

2upright_crosses

two upright crosses

two upright crosses, generally vertically disposed one above the other.

tshape

Tshape

having a shape like the capital letter T.

triangle_pointup_over_circle

triangle pointing up over a circle

a triangle, vertex uppermost, located above a circle.

upright_cross_over_circle

upright cross over a circle

an upright cross located above a circle.

rhombus_over_circle

rhombus over a circle

an upright cross located above a circle.
