Table 5.7 -- EDCS Classifications whose label begins with D
| Label | Definition | Related concepts | Code |
| DAM | A permanent barrier across a watercourse, used to impound water or to control its flow. | EC SLUICE_GATE | 222 |
| DATA_ARTEFACT | An indicator that identifies incomplete or illogical data at a specific location; used for data processing only. | 223 | |
| DATA_QUALITY_BOUNDARY | A boundary between two data collection zones with different data quality characteristics. | 224 | |
| DATA_QUALITY_REGION | A region with specific data quality characteristics. | 225 | |
| DECONTAMINATION_PAD | A site where a nuclear, biological, or chemical contaminated aircraft, checked at landing, is sent for decontamination by special teams. | 226 | |
| DEEP_WATER_ROUTE | A complex object consisting of a maritime route through deep water plus associated navigational marks, either fixed or floating. | EC MARITIME_ROUTE, EC NAVIGATIONAL_MARK_AFLOAT, EC NAVIGATIONAL_MARK_FIXED | 227 |
| DEFACTO_BOUNDARY | An existing line of separation not officially recognized by various governments. | 228 | |
| DEFENSIVE_POSITION | A structure (or collection of structures) constructed for the military defence of a site, which is resistant to ordnance. | 229 | |
| DEFENSIVE_POSITION_DEFILADE | A position affording protection or shielding from hostile ground observation and flat projecting fire which is provided by an artificial or natural obstacle, such as a hill or berm, e.g., a defilade. | 230 | |
| DEFINED_WATER | A complex object consisting of a region of water delimited for the purposes of: maritime routing (including safety fairways, channel edges and traffic separation schemes); communicating port or firing practice signals; or serving as a waypoint, calling in station, or an anchorage; plus associated navigational marks, either fixed or floating. | EC ANCHORAGE_COMPLEX, EC CHANNEL_EDGE, EC MARITIME_ROUTE, EC NAVIGATIONAL_MARK_AFLOAT, EC NAVIGATIONAL_MARK_FIXED, EC AVIATION_WAYPOINT | 231 |
| DEMILITARIZED_ZONE | A region where military activity is prohibited. | 232 | |
| DEPOT_TERMINAL | A railroad or bus station, often with an attached warehouse or storehouse. | EC WAREHOUSE | 233 |
| DEPTH_CONTOUR | A line connecting points of equal depth at and below a shared vertical datum. | EC CONTOUR_LINE | 234 |
| DEPTH_CURVE | A navigational safety line indicating that no sounding of a lesser depth exists seaward of the line, but greater depths may occur on the shallow side of the line. | 235 | |
| DEPTH_REGION | A region of water containing soundings within a defined range of values permanently at or below a reference vertical (e.g., sounding) datum. | 236 | |
| DESERT_REGION | A dry, often sandy, region of little rainfall, extreme temperatures, and sparse vegetation. | 237 | |
| DIAGNOSTIC_POINT | A point used to check system accuracy. | 238 | |
| DIFFUSER | An artificial installation at or below water level, where liquids (e.g., cooling water or spillage) are spread out. | 239 | |
| DIPLOMATIC_BUILDING | A building that houses or supports the activities of an ambassador. | EC AMBASSADORIAL_RESIDENCE, EC CONSULATE | 240 |
| DISCOLOURED_WATER | A region of water having a colour distinctly different from that of the surrounding water. | 241 | |
| DISH_ANTENNA | A concave-shaped antenna that is used for transmitting or receiving electronic signals, e.g., a dish or disk antenna. | 242 | |
| DISPLAY_LIGHT | A specially constructed device that illuminates display signs or other structures. | EC DISPLAY_SIGN | 243 |
| DISPLAY_SIGN | An upright panel, or similar structure, used to convey visual information. | EC GANTRY | 244 |
| DISPOSAL_SITE | A site for the collection and/or deposition of refuse or discarded material. | EC MINERAL_PILE, EC SCRAP_YARD, EC STORAGE_DEPOT, EC WRECKING_YARD | 245 |
| DISTANCE_MARK | A mark that indicates the value of distance measured from an origin and consists of either a solid visible structure or a distinct location without a special installation. | 246 | |
| DISTANCE_POST | A marker which designates the distance from a given point or location. | 247 | |
| DISTURBED_SOIL | Ground that has been so disturbed by human activity that no single soil type can be accurately identified, e.g., a built up region, strip mine, landfill, or railroad yard. | EC BARREN_GROUND | 248 |
| DORMITORY | A building used to house civilians (e.g., students, or employees), which is typically large, unadorned and intended for relatively temporary occupancy. | 249 | |
| DRAGLINE | An excavating machine consisting of a steel scoop that swings on chains from a movable jib; the scoop is cast into the material to be excavated and dragged back to the jib, where it is lifted and dumped. | EC DREDGE, EC SHOVEL | 250 |
| DRAGON_TEETH | Regularly spaced concrete or metal barriers laid in single or multiple rows to prevent vehicle movement, e.g., dragon teeth. | 251 | |
| DREDGE | A rectangular or cylindrical machine used for underwater excavation, often mounted on a barge. | EC DRAGLINE, EC SHOVEL | 252 |
| DREDGE_SHOVEL_OR_DRAGLINE | An excavating machine for removing earth or materials. May be further delineated specifically as EC DREDGE, EC SHOVEL, or EC DRAGLINE. | 253 | |
| DRILLING_RIG | A structure that enables equipment to be deployed in a hole in the ground or ocean floor. | EC DRILLING_RIG_SUPERSTRUCTURE | 254 |
| DRILLING_RIG_SUPERSTRUCTURE | The part of a drilling structure that includes a tower, drill floor and associated equipment, e.g., cables, pulleys, motors, and compressors. | EC DRILLING_RIG | 255 |
| DRINKING_TROUGH | A man-made open water container for animal drinking. | 256 | |
| DRIVE_IN_THEATRE | A place where motion pictures are shown while viewers remain in their vehicles. | EC DRIVE_IN_THEATRE_SCREEN, EC THEATRE | 257 |
| DRIVE_IN_THEATRE_SCREEN | A large outdoors screen for showing motion pictures. | EC DRIVE_IN_THEATRE | 258 |
| DROP_GATE | A massive assemblage of material, usually in the form of concrete logs or blocks, positioned above a transportation route, ready to be activated as a potential barrier to an advancing enemy ground force, when needed. | EC DROP_GATE | 259 |
| DROP_GATE_OR_ROLLING_BLOCK | A massive assemblage of material, usually in the form of concrete logs or blocks, positioned alongside (e.g., a rolling block) or above (e.g., a drop gate) a transportation route, ready to be activated as a potential barrier to an advancing enemy ground force, when needed. May be further delineated specifically as EC DROP_GATE or EC ROLLING_BLOCK. | 260 | |
| DROVE | A wide track on the terrain surface due to the regular movement of animal herds, e.g., sheep or cattle. | 261 | |
| DRY_DOCK | A structure, providing support for a vessel, which has a means of removing water so that the bottom of the vessel can be exposed. | EC CAISSON | 262 |
| DRY_LAND | A region of the land surface neither permanently nor temporarily covered by water. | 263 | |
| DYKE_CROWN | The top line (crown) of a dyke (or dike), an artificial embankment to contain or hold back water. | EC EMBANKMENT | 264 |