Oceanography

GS Paper: GS Paper I | Subject: Geography

Prelims

(Key facts, data, schemes, laws, organizations — MCQ-ready points)

Great Nicobar Island — southernmost of the Andaman & Nicobar group; Galathea Bay lies only ~45 km from the Six Degree Channel
Six Degree Channel separates Great Nicobar from Indonesia's Aceh; carries shipping linking the Malacca Strait to routes toward Africa, the Middle East and Europe
Key Indo-Pacific chokepoints near the islands: Malacca, Sunda, Lombok Straits
Great Nicobar Project components: International Container Transshipment Port (ICTT) at Galathea Bay, greenfield airport, township, power plant — got National Green Tribunal (NGT) clearance
Thailand alternative to the Kra Canal: a ~90-km overland "land bridge" linking Ranong (Andaman Sea) and Chumphon (Gulf of Thailand) with rail/road/pipelines — could reshape Indo-Pacific trade routes

(Analysis, dimensions, significance, critique, policy angles — for 10/15 mark answers)

Geography → strategy: Great Nicobar's proximity to the Malacca chokepoint makes it a natural watchtower over the IOR's busiest sea lanes; infrastructure (port, airport) converts location into usable strategic presence — "Singapore was located and built capacity"
Strategic consolidation thesis (D K Joshi, former Navy chief): sovereignty is strengthened when territory is connected, inhabited, serviced and productive — as rival powers expand ports/bases across the Indian Ocean
Ecology vs. development tension: Critics flag biodiversity loss (Galathea — leatherback turtles, Nicobarese tribal areas, rainforest). Author's line: ecological sensitivity must not become a "permanent veto" on strategy → pursue national security with ecological responsibility
UPSC angle: Sea lanes of communication (SLOCs), maritime chokepoints, Indian Ocean Region strategy, Andaman & Nicobar Command, development vs. environment, island geography