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).

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.

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.