Geography¶
The Federation of Malavanu is a six-island archipelago that spans the maritime passage between the Sea of Xianren to the east and the paired Volnian Sea and Sea of Pelawan to the west. The archipelago lies south of the Xianren mainland, west of Hinomura, and north of the Ultimal Ocean. Its position across the principal maritime through-route of the region gives the Federation a strategic weight substantially larger than its economic footprint would predict.
The archipelago¶
The Federation is composed of six major islands arranged as a broken chain from the northwest to the southeast, plus a substantial number of smaller populated islands and coastal islets. From north to south:
Kelambak¶
The northernmost major island. Mountainous, forested, and less densely populated than the central islands. Kelambak historically formed the maritime approach to the Xianren commercial-shipping route through the northern strait and is the site of the Federation's principal northern-approach naval installation at Sungai Kelambak. The island's interior is dominated by the Gunung Batir massif, whose eastern flank falls sharply to the Sea of Xianren coast; the western coast is a lower agricultural plain producing rubber and copra. Population approximately 6.8 million. Principal city: Kelambak Bandar.
Panjaya¶
The largest and most-populous island of the Federation, holding the federal capital Kotamalava on its central-eastern coast. Panjaya is the political, commercial, and demographic centre of the Federation — roughly a third of the national population lives here, and the two largest ports of the Federation (Kotamalava Port and Kuala Salindar on the western coast) sit on its shores. The interior of Panjaya is a mixed landscape of coastal alluvial plains, low volcanic ridges through the centre, and semi-cultivated highland forest. The Panjaya Strait — the narrow channel separating Panjaya from Selingga — is the principal Federation-transiting maritime route and one of the busier through-shipping arteries of the eastern Sierran world. Population approximately 24 million.
Selingga¶
Immediately south of Panjaya, separated by the Panjaya Strait. Selingga is the Federation's principal agricultural island — the western coastal plain produces the majority of the Federation's rice, palm-oil equivalents, and export-grade rubber; the eastern coast is more heavily forested and lightly-populated. Selingga was the site of the worst civilian atrocities of the Xianren occupation (the 1941 Selingga famine and the Rasau labour camps), and its national-memory role in the Federation's political vocabulary is correspondingly heavy. Population approximately 18 million. Principal city: Puri Kelapa.
Batumas¶
The westernmost of the major islands, forming the Federation's shoreline against the Volnian Sea. Batumas is smaller and more sparsely-populated than Panjaya or Selingga, with a Federation-Wide reputation for its rugged interior, its distinctive Malay-Malacca traditions, and its role as the historical commercial gateway between the Federation and the Sur'Bari trading world. The port of Batumas Lama on the northern coast is the Federation's principal west-facing commercial harbour. Population approximately 8.4 million.
Tanjadu¶
The easternmost of the major islands, forming the Federation's shoreline against the Sea of Xianren. Tanjadu is the closest Federation territory to the Xianren mainland — approximately 340 kilometres of open water separates the Tanjadu east coast from the Xianren coastal province opposite. This proximity has made Tanjadu a permanent focus of Federation defence planning and the site of the Federation's principal eastern-facing naval installation at Tanjadu Bay. The island is heavily-forested and mountainous, with substantial areas of primary rainforest in the interior. Population approximately 7.1 million.
Mengkuli¶
The southernmost of the major islands, and the Federation's most politically-fraught territory. Mengkuli is home to the Mengkulan people — a linguistically and culturally distinct community whose incorporation into the Federation at independence was unwilling and remains contested. The island is smaller than Batumas but denser, with a substantial coastal-plain population supporting a rice, coconut, and fisheries economy. The Barisan Bebas Mengkuli (BBM) armed separatist movement operates in the southern uplands. Population approximately 12 million. Principal city: Kolamalu.
Straits and passages¶
The archipelago's geometry produces four principal maritime passages, in each case commercially and militarily significant:
- Panjaya Strait — between Panjaya and Selingga. The Federation's principal through-shipping route. Approximately 40 nautical miles at its narrowest. Traffic is coordinated through Federation pilotage services at Kotamalava and Puri Kelapa.
- Tanjadu Passage — between Tanjadu and the Xianren mainland. The Federation's principal east-facing approach corridor and the diplomatic-sensitivity-heavy passage that Federation naval planning must protect against a hypothetical adversary transit. Approximately 340 kilometres of open water separates Tanjadu from the Xianren littoral.
- Batumas Approach — between Batumas and the Malacca-Sur'Bari commercial-shipping route. Federation-tolerated open passage.
- Mengkuli South Passage — the southernmost Federation waters, connecting the Sea of Pelawan to the Ultimal Ocean. Approximately 60 nautical miles at its narrowest. Federation pilotage is available but not required by treaty.
Climate and terrain¶
The Federation lies in the equatorial tropical belt. Climate is hot and humid year-round with a twelve-month growing season, punctuated by two rainy seasons (April–June and October–December) and two drier interstitial months. Typhoons are uncommon in Federation waters — the archipelago sits south of the principal typhoon-formation zone that affects Hinomura and northern Xianren.
Interior terrain across the six major islands is predominantly primary and secondary tropical rainforest at low elevation, with substantial volcanic mountain ranges through the interior of Panjaya, Kelambak, and Tanjadu. The northern islands (Kelambak, Panjaya, Tanjadu) reach elevations above 2,500 metres in their interior mountains; the southern and western islands (Selingga, Batumas, Mengkuli) are lower and flatter, with agricultural plains dominant.
Federal capital: Kotamalava¶
Kotamalava — literally "Malavanu City" — is the federal capital and the largest Federation city (metro population approximately 8.1 million). It sits on the central-eastern coast of Panjaya Island, at the historical mouth of the Salindar River and at the northern entrance of the Panjaya Strait. Kotamalava is the Federation's principal port, the seat of the federal government, the headquarters of the Malavanu Armed Forces, the principal financial and commercial centre, and the site of Federation President's Palace (Istana Presiden) and the Council of Assembly building.
Kotamalava's historical core — the Sultan's Square district — contains the pre-Continental-Wars palace of the Sultan of Panjaya (the last of the pre-occupation local rulers), the Independence Monument commemorating the 13 August 1946 declaration, and the Wall of Remembrance listing the names of Xianren-occupation-era dead. All three are the site of the annual Independence Day national ceremony.
The southern-outer-islands cluster¶
Beyond the six major islands, the Federation includes approximately 340 smaller populated islands and several hundred additional uninhabited coastal islets and reef features. The Southern Outer Islands — a scatter of small islands south and east of Mengkuli — are the Federation's least-developed and most-remote territory, with significant local self-administration, active Barisan Bebas Mengkuli presence in the outer easternmost cluster, and limited Federation administrative reach. Federation Interior Ministry maintains a paramilitary constabulary presence in the largest Southern-Outer-Islands communities, but effective control is contested in several outer clusters.
Federation border-and-sovereignty enforcement in the Southern Outer Islands is coordinated by the Malavanu Coast Guard and the 6th Territorial Command of the Army. Xianren-flagged vessels are informally understood to transit the outer eastern cluster with routine frequency; Federation policy has not publicly acknowledged this pattern.