Data Portal @ linkeddatafragments.org

Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Submarine_navigation> ?p ?o. }

• Submarine_navigation abstract "Submarine navigation underwater requires special skills and technologies not needed by surface ships. The challenges of underwater navigation have become more important as submarines spend more time underwater, travelling greater distances and at higher speed. Military submarines travel underwater in an environment of total darkness with neither windows nor lights. Operating in stealth mode, they cannot use their active sonar systems to ping ahead for underwater hazards such as undersea mountains, drilling rigs or other submarines. Surfacing to obtain navigational fixes is precluded by pervasive anti-submarine warfare detection systems such as radar and satellite surveillance. Antenna masts and antenna-equipped periscopes can be raised to obtain navigational signals but in areas of heavy surveillance, only for a few seconds or minutes; current radar technology can detect even a slender periscope while submarine shadows may be plainly visible from the air.Surfaced submarines entering and leaving port navigate similarly to traditional ships but with a few extra considerations because most of the ship rides below the waterline, making them hard for other ships to see and identify.".
• Submarine_navigation thumbnail US_Navy_050127-N-4658L-030_The_Los_Angeles-class_fast-attack_submarine_USS_San_Francisco_(SSN_711)_in_dry_dock_to_assess_damage_sustained_after_running_aground_approximately_350_miles_south_of_Guam_Jan._8,_2005.jpg?width=300.
• Submarine_navigation wikiPageID "14552094".
• Submarine_navigation wikiPageRevisionID "600069557".
• Submarine_navigation hasPhotoCollection Submarine_navigation.
• Submarine_navigation subject Category:Navigation.
• Submarine_navigation subject Category:Submarines.
• Submarine_navigation type Artifact100021939.
• Submarine_navigation type Conveyance103100490.
• Submarine_navigation type Craft103125870.
• Submarine_navigation type Instrumentality103575240.
• Submarine_navigation type MilitaryVehicle103764276.
• Submarine_navigation type Object100002684.
• Submarine_navigation type PhysicalEntity100001930.
• Submarine_navigation type Ship104194289.
• Submarine_navigation type Submarine104347754.
• Submarine_navigation type Submarines.
• Submarine_navigation type Submersible104348184.
• Submarine_navigation type Vehicle104524313.
• Submarine_navigation type Vessel104530566.
• Submarine_navigation type Warship104552696.
• Submarine_navigation type Whole100003553.
• Submarine_navigation comment "Submarine navigation underwater requires special skills and technologies not needed by surface ships. The challenges of underwater navigation have become more important as submarines spend more time underwater, travelling greater distances and at higher speed. Military submarines travel underwater in an environment of total darkness with neither windows nor lights.".
• Submarine_navigation label "Submarine navigation".
• Submarine_navigation sameAs m.03d7npl.
• Submarine_navigation sameAs Q7631640.
• Submarine_navigation sameAs Q7631640.
• Submarine_navigation sameAs Submarine_navigation.
• Submarine_navigation wasDerivedFrom Submarine_navigation?oldid=600069557.
• Submarine_navigation depiction US_Navy_050127-N-4658L-030_The_Los_Angeles-class_fast-attack_submarine_USS_San_Francisco_(SSN_711)_in_dry_dock_to_assess_damage_sustained_after_running_aground_approximately_350_miles_south_of_Guam_Jan._8,_2005.jpg.
• Submarine_navigation isPrimaryTopicOf Submarine_navigation.