Senyan frontier

The Senyan frontier is the official government term for the land and sea borders of Senya. Senya currently shares a border with Natopia's territory of Arboria to the north-west, Jingdao to the south, as well as coastal waters to the north-east and a frontier against the unclaimed territories to the north. Senya has previously shared land borders with Elwynn (1589–1600), Shireroth (1589–1617), Palasia (1599–1607), the Apollonian Republic (1617–1634), Gerenia (1626–1636), Jexit (1638–1641) and Francia (1684–1685).

Jingdaoese border

The Senyan–Jingdaoese border is the longest of Senya's four borders and extends first southbound from the tripoint with Arboria, before heading eastwards, becoming the southern frontier of Senya, crossing the mountains of Senyan Arboria until it reaches Lake Lamantia, where the border becomes a maritime one, extending down the length of the Camoleo River until it reaches the Northern Sea. The rules and regulations of the border are covered by the Senyan–Jingdaoese treaty of 1685.

Of all of Senya's borders, its frontier with Jingdao has historically been the most problematic.

Where terrain is permissive, a border wall has been constructed to prohibit illegal crossings. At all border checkpoints, there are both customs and immigration officials on each side of the border. One must go through both passport control and customs of the nation they are leaving, prior to crossing the border and then going through customs and immigration control of the nation they are entering.

Along the length of the Camoleo River, Senya and Jingdao recognise the maritime border as being the line along the Camoleo River which is geographically equidistant between the Northern bank (Senya) and the Southern bank (Jingdao). The border also takes into account the Jingdaoese island, and curve the border to the northern side of that island to ensure that Jingdaoese ships can go from it to the mainland without crossing into Senyan territory. Both nations share equal fishing rights within the Camoleo River, but any military or commercial (ie fishing) vessels should stay on their side of the border. Private recreational craft can cross the maritime border but should not go within 1km of the other nation’s border unless they plan to dock and present themselves to customs and immigration officials. Lake Lamantia is treated as Senyan territorial waters, with the exception of any waters that are within 50 km of the Jingdaoese coastline or are not closer to Senyan land than Jingdaoese land. When one or both parties are at war, the enemy vessels of either party will be prohibited from entering the Senyan or Jingdaoese territorial waters.

Coastal borders

Senya follows the Micras Treaty Organisation's Convention on the Laws of the Seas, despite neither being signatory to the treaty nor a member of the MTO. As a result, Senya exercises its exclusive reserve zone of 360 kilometres from the baseline of its coast, viewing the economic and environmental resources within this zone belonging fully to it, and that anything within 24 kilometres of the baseline is considered territorial water and subject to the full jurisdiction of the state, with all matters of customs, taxation, and immigration operate as if wholly within the state. However, Senya does permit recreational and some cargo containers to pass through its territorial waters without paying tax or going through customs, so long as they do not come closer than 5 kilometres to the coast and do not engage with anyone that also wishes to break the 5 kilometre limit, though the coastguard does have the power to board these craft if suspected of smuggling contraband or engaging in any other illegal activity.

The coast is protected by the Senyan coastguard, which is tasked in monitoring the shores near Senya and preventing people from illegally entering Senyan waters. Any vessel found trying to illegally entering Senyan waters can be brought to shore by the coastguard, with those onboard subject to prosecution. The exception for this is any refugees or asylum seekers, who will be brought to processing by the Senyan Refugee Commission.

Senya's frontiers along Lake Lamantia and Camoleo River are deemed to be part of the Senyan–Jingdao border and are subject to the the treaty and further regulations governing that border.

Border crossings

Air

A number of Senyan airports receive international flights, requiring them to have a Senyan Border Force presence. This is typically done by sealing off the arrivals hall in each airport off from the rest of the airport, and requiring passengers to pass through passport control prior to heading to baggage reclaim or boarding a connecting flight. Whilst Senyan nationals and nationals of selected other nations may pass through a simple bio-metric check, all other nationals, as well as children under the age of 18 must report to a border guard. Following the baggage reclaim area, passengers pass through a customs control area, where passengers are asked to declare certain items. Failure to do so, or to try and smuggle any contraband items into Senya is a criminal offence.

In the rare occasion that a non-international airport receives an international flight (typically during emergencies), local police officers will prevent disembarkment until border and customs officers can be dispatched.

Air traffic is the most common method for foreigners to enter and leave Senya.

Additionally, Senya takes its airspace very seriously, and is monitored by the Senyan armed forces. Whilst commercial, chartered and some special flights (such as those of foreign leaders) are exempted, it is typically illegal for private citizens of a foreign nation to fly an aircraft into Senyan airspace. Even if the craft does not land in Senya, it is considered to be an illegal crossing of the Senyan border and is thus punishable by the aforementioned punishments.

Rail

The Senyan Rail network currently extends into other nations at three separate points, all of which are home to border stations. The Senyan–Arborian border is intersected by the Dyas–Meiridosa line, whilst the Senyan–Jingdaoese border is crossed on both the Tiga–Yuanbeicheng and Svorgas–Daocheng lines.

Jingdao owns and operates a rail freight terminal in Jogasim on the Svorgas–Daocheng line as part of its White Tea Road initiative. As part of the deal, Senyan customs inspectors, as well as local police, are permitted unrestricted access to the facility in order to check for contraband and other illegal items. Whilst additional customs checks are done at the border, part of the role of the customs officials at the Jogasim terminal is to sign off goods headed for Jingdao to allow for a quicker pass through at the border.