Suggestions of Finnish Orienteering Federation for ISOM 2000 project


The International Specification for Orienteering Maps (ISOM) 1990 has worked well in Finland as well. This is why we see no reason for any major changes. However we think that the symbols drawn with ADP should equal the symbols drawn by pen. (3.2 Dimensions of map symbols)
Later on, there will be some suggestions for changes as well as new symbols.

4.1 Land forms
101 Contour 0.14
103 Form line0.14
112 Small knolldiameter 0.50
116 Broken grounddiameter 0.25, 15 %
New: small knoll(Swedish model)

4.2 Rock boulders boulders
203 Passable rock faceonly 0.25, tags' length (if needed) 0.40
210 Stony ground0.25
212 Bare rockblack 20 %, 150 lines/inch or grey 100 %

4.3 Water and marsh
306 Crossable small watercourse0.14
307 Minor water channel0.14

4.4 Vegetation
406 Forest slow running30 %
408 Forest: difficult to run60 %
415 Cultivated landyellow 100 % and black dots, diameter 0.20
416 Distinct vegetation boundaryblack dots diameter 0.23

New: Bushes. Bushy area with small trees, where one can run by zig-zagging as in 406.
Colour: green 60 % (40 lines/cm) white 50 % (16.75 lines/cm).

New : Rushes. Uncrossable area on the shores of waterways.
Colour: blue 20 %, green 33 % (27 lines/cm) as in 409

4.5 Man-made features

New: Tractor tracks.
Deep, clearly visible tracks made by forest tractors, ground surface broken.
Reduced runnability.
Two parallel broken lines, width 0.08 each, length 2.5.
Distance between lines 0.25
Trench0.13 (same as 414)
North lines1:15 000   0.18
1:10 000   0.13 (i.e. 1.5 x in printed map)

With regards from the
FINNISH ORIENTEERING FEDERATION
Jorma Ake
p.p. Jukka Liikari
Secretary, FOF Mapping Committee