Template:Table:INT-1:I

See here for complete list. List of chapters: A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U

INT 1 #	Symbol	Description	OSM Tags	OSM Proposals
I: Depths
I1	ED	Existence Doubtful	depth:source_quality=existence_doubtfull
I2		Sounding Doubtful	depth:source_quality=sounding_doubtfull
I3.1	Rep	Reported Dangers	depth:source_quality=reported
I3.2	Rep (1977)	Reported Dangers with indication of last report	depth:source_quality=reported + depth:source_quality:reportyear=*
I4		Reported Dangers with indication of last report	depth:source_quality=reported_not_confirmed
I10		Numerical values of single point soundings		This should be handled by an external database, similar to SRTM data for heights at land.
I11		Out of position soundings		This should be handled by an external database, similar to SRTM data for heights at land.
I12		Least depth in narrow channel		This should be handled by an external database, similar to SRTM data for heights at land.
I13		Non-bottom soundings		This is readings from echosounders where real seabed is deeper. Only way to survey the depth is by use of manual sounding.
I14		Unreliable soundings		Quality of seabed, sediments of water, or special conditions of currents and tides might give wrong readings, or the source are old or inaccurate.
I15		Drying height	water=tidal + height=*?
I16		Natural water cause
I20		Limit of dredged area	waterway=dredged_area seamark:type=dredged_area
I21		Dredged depth	depth:dredged=* + waterway=dredged_area seamark:type=dredged_area	Proposed features/marine-tagging
I22		Dredged depth not regularly maintained	depth:dredged=* + maintained=no + depth:dredged:year=* + waterway=dredged_area seamark:type=dredged_area	Proposed features/marine-tagging
I23		Dredged depth regularly maintained	depth:dredged=* + maintained=yes + waterway=dredged_area seamark:type=dredged_area	Proposed features/marine-tagging
I24		Swept Area	waterway=swept_area	Proposed features/marine-tagging
I25		Area with note regarding depth survey	note:depth=*
I30		Depth contours		This should be handled by an external database, similar to SRTM data for heights at land.
I31		Approximate contours		This should be handled by an external database, similar to SRTM data for heights at land.
National variations starts here
Ia		Lesser Depth Lesser depths have been reported
Ib		Coastal areas which sometimes covers at High Water
Ic	unexam	Unexamined