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Initial claims of Plane #17's current iteration were reported in November 1943. Though previously used as a minor thoroughway by many groups to travel between several more populated planes in the past, an apparent topographical transformation has rendered it functionless. Only known entrance and egress is through an inconspicuous closet, currently located in the Storage Zone 1 antechamber. Previous iterations of Plane #17 have been stricken from most available databases.
Plane #17; Sector 4.
Plane #17 comprises a series of 217 athwartship passages of standard early-to-mid twentieth-century design. Each corridor is identical in structure aside from deviations in sanitation, upkeep, and occupancy. Sections are divided into 42 compartments, all with furnishings expected of a naval vessel. These compartments include barracks, kitchens, communication centers, and engineering stations. Each passageway is separated by a reinforced bulkhead door. Evidence construed from anecdotal testimonies and time-keeping devices suggests independent temporal operation of the individual compartments.
Each section may contain one or more human occupants or the remains thereof; it is ill advised to interact with these residents, as they possess varying degrees of hostility and cognitive ability.
Attached is a non-comprehensive list of noteworthy observations, organised by sector and ordered numerically from distance to the entrance.
| Sector # | Discovery | Notation |
|---|---|---|
| Sector 1 | "We co me to th El ri ge" is written next to the first bulkhead door, five letters are illegible. | The words are written in a viscous sludge; color and consistency suggest coagulated oil. |
| Sector 8 | Extensive damage consistent with a small explosion. | Shrapnel congruent with Mk. 6 depth charge munitions. |
| Sector 12 | Adult male, dressed in a stained 1940's standard-issue US naval uniform. Individual insists that civilians are not allowed on the ship, but otherwise takes no action to prevent interference. Appears incapable of leaving Sector 12. | Uniform caked in dried viscera—lack of wounds on instance suggest conflict. Was replaced in 1982 by a younger man displaying the same behavior. |
| Sector 33 | Several naval charts mapping the western Atlantic Ocean, Delaware River, and the US east coast. | Charts include harbor registries for New York and Philidelphia. |
| Sector 47 | "The Lord's Prayer" can be heard as whispers from a storage closet. | Closets empty. Speech inaudible upon opening. |
| Sector 67 | Every bulkhead is etched in complex mathematics. Most are nonsensical. | Writing covers nearly every exposed surface of the walls. |
| Sector 104 | Infirmary contains innumerable quantities of adult male corpses. | Bulkhead door stuck ajar due to significant obstruction. |
| Sector 156 | Schematics for unknown machine found in all sectors. Machine consists of thousands of vacuum tubes, transistors, and many unidentified components. | Confidential title page labeled with "Project RAINBOW". |
| Sector 165 | Skinless man won't allow access to barracks. | N/A |
| Sector 185 | Bridge contained 216 living human infants. | Noise and smell have been described as "unbearable". |
| Sectors 200-206 | Noticeable drop in temperature. | Thermometer analysis demonstrates fluctuations between -6° and 10° C. |
| Sector 217 | Unknown machine is actively emitting a blue light, a high-pitched tone, and a knocking sound. | Only known instance of this machine being active. |
| Sector 217 | 216 humans are partially fused to the bulkhead, floor, and deckhead. | Evidence indicates that all individuals are alive. |
Recovery of persons found in Plane #17 was considered a misallocation of resources at the time, all investigations were halted in light of this decision. Due to the plane being unviable as a nexus point it currently serves no use—further explorations are considered redundant and have been deemed unnecessary.