Imagery Offset Database

Airigh Loch nan Learg, Na h-Eileanan Siar, Alba / Scotland, United Kingdom

An imagery offset of 3.3 m
Imagery: bing
Created by benoitdd on 2020-10-29
Outer Hebrides - set from OS_Opendata_Streetview and existing mapping

Σουφλί, Δήμος Σουφλίου, Περιφερειακή Ενότητα Έβρου, Περιφέρεια Ανατολικής Μακεδονίας και Θράκης, Αποκεντρωμένη Διοίκηση Μακεδονίας - Θράκης, 684 00, Ελλάς

An imagery offset of 8.2 m
Imagery: access.maxar.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=c70baacb-3ad6-4778-b643-2023ba6da137
Created by HenryFjord on 2020-10-29
Maxar Standard Imagery (5.46; 9.49); Strava - Σουφλί area

189 Sokak, Deliktaş, Taşyaka Mah., Taşyaka Mahallesi, Fethiye, Muğla, Ege Bölgesi, 48300, Türkiye

An imagery offset of 1.7 m
Imagery: bing
Created by hocu on 2020-10-29
Bing offset baed on roads

Baha Şıkman Caddesi, Deliktaş, Taşyaka Mah., Taşyaka Mahallesi, Fethiye, Muğla, Ege Bölgesi, 48300, Türkiye

An imagery offset of 7.7 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=standard
Created by hocu on 2020-10-29
Maxar imagery offset based on the secondary roads

Elm Avenue, Baltimore Park, Larkspur, Marin County, California, 94939, United States

An imagery offset of 1.1 m
Imagery: bing
Created by jnmiller on 2020-10-29
Marin County, California

Manzano Street, Hillside Subdivision, Asan Sur, Pangasinan, Ilocos Region, 2434, Philippines

An imagery offset of 6.7 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by TagaSanPedroAko on 2020-10-29
Asan Sur, Sison (Maxar Premium)

Жандосов ауылы, Қарасай ауданы, Алматы облысы, 040928, Қазақстан

An imagery offset of 1.7 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Lyubchenko Denis on 2020-10-28
Чемоган

Васильківська вулиця, Голосіїв, Голосіївський район, Київ, 03022, Україна

An imagery offset of 3.1 m
Imagery: bing
Created by Movses on 2020-10-28
Котельная возле общежитий КНУ

Васильківська вулиця, Голосіїв, Голосіївський район, Київ, 03022, Україна

An imagery offset of 0.5 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Movses on 2020-10-28
Котельная рядом с общежитиями КНУ

346/1 Sokak, Patlangıç Mah., Patlangıç Mahallesi, Fethiye, Muğla, Ege Bölgesi, 48300, Türkiye

An imagery offset of 6.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=standard
Created by hocu on 2020-10-28
Imagery offset based on existing roads

улица Фурманова, Приволжское городское поселение, Приволжский район, Ивановская область, Центральный федеральный округ, 155550, Россия

An imagery offset of 0.1 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by literan on 2020-10-28
Приволжск

вулиця О. Іванчака, Погорілівка, Юрковецька сільська громада, Чернівецький район, Чернівецька область, 59436, Україна

An imagery offset of 2.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by UPegasus on 2020-10-27
Погорілівка, Maxar

Погорілівка, Юрковецька сільська громада, Чернівецький район, Чернівецька область, 59436, Україна

An imagery offset of 3.2 m
Imagery: bing
Created by UPegasus on 2020-10-27
Погорілівка, Bing

Kanamkemer, Turkana, Rift Valley, 30500, Kenya

An imagery offset of 7.7 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Richard Ruh on 2020-10-27
-3.73; 6.72 Adjusted to match most of buildings and roads in task 1579 of HOTOSM #9677

Українська вулиця, Добринівці, Юрковецька сільська громада, Чернівецький район, Чернівецька область, 59444, Україна

An imagery offset of 6.1 m
Imagery: bing
Created by UPegasus on 2020-10-26
Добринівці, Bing

Tregarne, St Keverne, Cornwall, England, TR12 6ER, United Kingdom

An imagery offset of 1.4 m
Imagery: arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/tile
Created by Lizardite on 2020-10-26
NE Lizard based on accurate OS trig point import.

Nawoitorong, Turkana, Rift Valley, 30500, Kenya

An imagery offset of 10.8 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Richard Ruh on 2020-10-26
-0.90; 10.75 to best align mapped road for tasked 1562 of OSM #9677

Kanamkemer, Turkana, Rift Valley, 30500, Kenya

An imagery offset of 11.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Richard Ruh on 2020-10-26
-0.60; 11.64 for task 1561 of OSM #9677 to match buildings to roads

Kapenguria-Lodwar Road, Kailoseget, Turkana, Rift Valley, 30500, Kenya

An imagery offset of 11.0 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Richard Ruh on 2020-10-26
-0.60; 11.05 for task 1563 of OSM #9677 to align existing road markings to imagery

65К-0703000, Щипачи, городской округ Богданович, Свердловская область, Уральский федеральный округ, Россия

An imagery offset of 2.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Алексей on 2020-10-26
Смещение актуально для д.Щипачи и В. Полдневая

«Урал», Тюбукское сельское поселение, Каслинский район, Челябинская область, Уральский федеральный округ, 456848, Россия

An imagery offset of 2.5 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Shoorick on 2020-10-25
Поворот на Касли

Atatürk Caddesi, Sakarya, 150 Evler Mahallesi, Ayvalık, Balıkesir, Marmara Bölgesi, 10400, Türkiye

An imagery offset of 6.0 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=standard
Created by hocu on 2020-10-25
Maxar offset based on the coastline

Набережная улица, Мостострой, Ленинский район, Владимир, городской округ Владимир, Владимирская область, Центральный федеральный округ, 600000, Россия

An imagery offset of 3.0 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by xmd5a on 2020-10-25
Мостострой

д. Жуково — д. Поджуково, городской округ Богданович, Свердловская область, Уральский федеральный округ, Россия

An imagery offset of 2.0 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Алексей on 2020-10-25
Смещение актуально для д.Отябрина

Afgooye أفجوي, Shabeellaha Hoose شبيلي السفلى, Koonfur Galbeed جنوب غرب, Soomaaliya الصومال

An imagery offset of 19.4 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by XnL on 2020-10-25
East of Madiina

улица Ленина, Старокарасук, Старокарасукское сельское поселение, Большереченский район, Омская область, Сибирский федеральный округ, Россия

An imagery offset of 5.1 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by whalerich on 2020-10-25
Старокарасук

Hatta, دبي, الإمارات العربية المتحدة

An imagery offset of 2.0 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Rotilom on 2020-10-25
Hatta area

Череповец, городской округ Череповец, Вологодская область, Северо-Западный федеральный округ, 162625, Россия

An imagery offset of 4.2 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Владимир К on 2020-10-24
Остинская улица

Череповец, городской округ Череповец, Вологодская область, Северо-Западный федеральный округ, 162600, Россия

An imagery offset of 3.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Владимир К on 2020-10-24
Архангельская улица

Боршодская улица, Череповец, городской округ Череповец, Вологодская область, Северо-Западный федеральный округ, 162603, Россия

An imagery offset of 1.5 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Владимир К on 2020-10-24
Заречье

СНТ № 10 ЧМХС, Череповец, Ирдоматское сельское поселение, городской округ Череповец, Вологодская область, Северо-Западный федеральный округ, 162600, Россия

An imagery offset of 2.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Владимир К on 2020-10-24
СНТ № 10 ЧМХС

С200424, Карашинці, Хоростківська міська громада, Чортківський район, Тернопільська область, 48281, Україна

An imagery offset of 4.4 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Dyoma on 2020-10-24
Карашинці

Don Jose, Santa Rosa, Laguna, Calabarzon, 4026, Philippines

An imagery offset of 10.3 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Rally on 2020-10-24
Tierra Bela, Malitlit | Sta Rosa LAG | Maxar (2020) | #Kaart

34Н-6, Угольское, Островский муниципальный округ, Костромская область, Центральный федеральный округ, Россия

An imagery offset of 6.7 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Владимир К on 2020-10-24
Угольское

Кокошинці, Гримайлівська селищна громада, Чортківський район, Тернопільська область, 48215, Україна

An imagery offset of 6.7 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Dyoma on 2020-10-24
Кокошинці

городской округ Богданович, Свердловская область, Уральский федеральный округ, Россия

An imagery offset of 5.2 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Алексей on 2020-10-24
Смещение снимка актуально в районе Прищаново, Контратьева, Кашино.

Bagoong Pook, Lian, Batangas, Calabarzon, Philippines

An imagery offset of 2.5 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Rally on 2020-10-24
Bagong Pook, Lian BAT | Maxar (2020) | #Kaart

Владимировка, Ламановское сельское поселение, Колосовский район, Омская область, Сибирский федеральный округ, Россия

An imagery offset of 1.5 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by whalerich on 2020-10-24
Владимировка

Malaruhatan, Lian, Batangas, Calabarzon, 4216, Philippines

An imagery offset of 2.5 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Rally on 2020-10-24
Malaruhantan (properr) | Lian BAT | Maxar (2020) | #Kaart

Molino, Quatro, Lian, Batangas, Calabarzon, Philippines

An imagery offset of 1.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Rally on 2020-10-24
Molino, Brgy Kapito| Lian BAT | Maxar (2020) | #Kaart

Bagbag, Bungahan, Uno, Lian, Batangas, Calabarzon, 4216, Philippines

An imagery offset of 3.1 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Rally on 2020-10-24
San Diego (Provincial Road) up to Petron only, Lian BAT | Maxar (2020) | #Kaart

Nasugbu-Lian Road, El Paso, Cogunan, Nasugbu, Batangas, Calabarzon, 4231, Pilipinas / Philippines

An imagery offset of 5.0 m
Imagery: bing
Created by Rally on 2020-10-23
Lumangan (intersection), Nasugbu BAT | Bing (2020) | #Kaart

48 Martirez Street, Dos, Singko, Lian, Batangas, Calabarzon, 4216, Philippines

An imagery offset of 2.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Rally on 2020-10-23
Dos, Lian BAT | Maxar (2020) | #Kaart

Ολυμπιάδος, Πανόραμα, Κοινότητα Πανοράματος, Δημοτική Ενότητα Πανοράματος, Δήμος Πυλαίας - Χορτιάτη, Μητροπολιτική Ενότητα Θεσσαλονίκης, Περιφέρεια Κεντρικής Μακεδονίας, Αποκεντρωμένη Διοίκηση Μακεδον

An imagery offset of 8.4 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by erenozdemir on 2020-10-23
#MaxarPremium

Αναγεννήσεως, Μασταμπάς, 4η Κοινότητα Ηρακλείου - Νότια, Δημοτική Ενότητα Ηρακλείου, Δήμος Ηρακλείου, Περιφερειακή Ενότητα Ηρακλείου, Περιφέρεια Κρήτης, Αποκεντρωμένη Διοίκηση Κρήτης, 713 05, Ελλάς

An imagery offset of 9.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by erenozdemir on 2020-10-23
#Maxar Premium

Андреевская, сельское поселение Иванищи, Гусь-Хрустальный район, Владимирская область, Центральный федеральный округ, Россия

An imagery offset of 3.2 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by xmd5a on 2020-10-23
Андреевская

G. Limjoco Street, Dos, Uno, Lian, Batangas, Calabarzon, 4216, Philippines

An imagery offset of 6.3 m
Imagery: bing
Created by Rally on 2020-10-23
Dos, Lian BAT | Bing (2020) | #Kaart

Barrio San Miguel, Challuabamba, Cuenca, Azuay, 010158, Ecuador

An imagery offset of 3.1 m
Imagery: clarity.maptiles.arcgis.com/arcgis/rest/services/World_Imagery/MapServer/tile
Created by nummer28 on 2020-10-23
Challuabamba

Баннівка, Василівська сільська громада, Болградський район, Одеська область, 68750, Україна

An imagery offset of 4.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by VileGecko on 2020-10-22
Bannivka Offset

Видная улица, Фестивальный, Прикубанский округ, Краснодар, городской округ Краснодар, Краснодарский край, Южный федеральный округ, 350062, Россия

An imagery offset of 3.1 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by XnL on 2020-10-22
Фестивальный

Цэнтр, Полацк, Полацкі раён, Віцебская вобласць, Беларусь

An imagery offset of 4.3 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by pliuto on 2020-10-22
полоцк

Комсомольская улица, Юрьев-Польский, городское поселение Юрьев-Польский, Юрьев-Польский район, Владимирская область, Центральный федеральный округ, 601800, Россия

An imagery offset of 3.3 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by xmd5a on 2020-10-21
Юрьев-Польский

провулок Івана Гонти, Центр, Брошнів-Осада, Брошнів-Осадська селищна громада, Калуський район, Івано-Франківська область, 77610, Україна

An imagery offset of 4.4 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by 1gorok on 2020-10-21
Брошнів-Осада

Омская улица, Могильно-Старожильск, Могильно-Посельское сельское поселение, Большереченский район, Омская область, Сибирский федеральный округ, Россия

An imagery offset of 7.6 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by whalerich on 2020-10-21
Могильно-Старожильск

Саудашова улица, Сарыағаш, Сарыағаш ауданы, Түркістан облысы, 160902, Қазақстан

An imagery offset of 4.7 m
Imagery: arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/tile
Created by Kuritsyn Roman on 2020-10-21
Саудашова улица

Cornerstone Parkway, Dallas, Dallas County, Texas, 75225, United States

An imagery offset of 17.7 m
Imagery: bing
Created by TravGW on 2020-10-21
Bing aligned to tennis court

Tregidden, St Keverne, Manaccan, Cornwall, England, TR12 6DS, United Kingdom

An imagery offset of 1.0 m
Imagery: clarity.maptiles.arcgis.com/arcgis/rest/services/World_Imagery/MapServer/tile
Created by Lizardite on 2020-10-20
North East Lizard based on OS trig point import.

Fevzi Çakmak Mah., Fevzi Çakmak Mahallesi, Elâzığ Merkez, Elâzığ, Doğu Anadolu Bölgesi, 23200, Türkiye

An imagery offset of 6.9 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=standard
Created by hocu on 2020-10-20
Maxar offset based on the existing roads

Harput, Elâzığ Merkez, Elâzığ, Doğu Anadolu Bölgesi, 23280, Türkiye

An imagery offset of 7.0 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=standard
Created by hocu on 2020-10-20
Maxar offset based on the existing roads and some other features

Soğukpınar Mahallesi, Pertek, Tunceli, Doğu Anadolu Bölgesi, 62500, Türkiye

An imagery offset of 4.7 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=standard
Created by hocu on 2020-10-20
Maxar offset based on the existing roads and features.

VI микрорайон, Холмск, Холмский городской округ, Сахалинская область, Дальневосточный федеральный округ, 694620, Россия

An imagery offset of 2.8 m
Imagery: services.digitalglobe.com/earthservice/tmsaccess/tms/1.0.0/DigitalGlobe:ImageryTileService@EPSG:3857@jpg?connectid=_apiKey_&foo=premium
Created by Serzhanya on 2020-10-20
Холмск