Within Melilla UFOs
The Radar Mystery Between Melilla and Ceuta
The 1983 Cadarso radar story shifts Melilla's UFO record from city lights to maritime and naval mystery.
On this page
- The reported collision course radar echo
- Why the Alboran Sea setting matters
- What is missing from the public record
Page outline Jump by section
Introduction
The Cadarso radar story is one of the few Melilla-linked UFO claims that moves the local record away from street-level lights and into a naval setting. The reported incident is simple but striking: one night in 1983, the Spanish Navy patrol vessel Cadarso was said to be travelling between Melilla and Ceuta when its radar detected a surface echo on a collision course; at the moment when contact should have occurred, the echo reportedly vanished, frightening personnel on the bridge. The public evidence, however, is extremely thin. The case is preserved mainly in later UFO-oriented summaries, not in a clearly identified Spanish Ministry of Defence UFO file. That makes it interesting as a Melilla maritime anomaly, but weak as a documented official case.[La esencia misma del Misterio]revistavocesdelmisterio.wordpress.comOpen source on wordpress.com.
Its value lies less in proving an exotic object than in showing how Melilla’s geography changes the character of local UFO reports. A city facing the Alboran Sea naturally produces stories involving shipping lanes, naval patrols, radar interpretation, border-zone vigilance and the difficult visual environment between the western Mediterranean and the Strait of Gibraltar. The Cadarso account should therefore be read as a small, unresolved radar anecdote within a real maritime setting, not as a confirmed encounter.
The reported collision-course radar echo
The core report says that the Spanish Navy patrol vessel Cadarso was on a patrol mission between Melilla and Ceuta in 1983 when its radar detected a surface return, or “echo”, apparently heading towards the ship on a collision course. According to the later published account, the echo disappeared from the radar at the theoretical moment of impact, and the officer of the watch and others on the bridge were alarmed by what they saw. The account gives no exact date, time, coordinates, sea state, weather conditions, radar plot, logbook extract, official witness statements or follow-up investigation.[La esencia misma del Misterio]revistavocesdelmisterio.wordpress.comOpen source on wordpress.com.
That missing detail matters. Radar cases often sound stronger than visual sightings because they appear to involve an instrument rather than only human perception. But a radar report is only as good as the surrounding record: what type of radar was being used, how many sweeps showed the target, whether another sensor saw the same thing, whether the contact had speed and bearing data, whether nearby traffic was checked, and whether the ship’s log preserved the event. In the public Cadarso story, those checks are not available.
The vessel itself was real and suitable for the kind of setting described. Cadarso, hull number P-03, was a Lazaga-class Spanish patrol boat built by Bazán at La Carraca, launched in January 1975, commissioned in July 1976 and decommissioned from Spanish service in June 1993. Its listed equipment included a WM-22 surface and target-acquisition radar and a TM 1620/6X navigation radar, which fits the idea that a surface contact could have been noticed during a night passage.[Los Barcos de Eugenio]losbarcosdeeugenio.comLos Barcos de Eugenio Los Barcos de Guerra de EugenioLos Barcos de Eugenio Los Barcos de Guerra de Eugenio
The ship’s profile also helps place the story in its proper scale. Cadarso was not a major warship but a fast patrol vessel, listed at about 58 metres long, with a complement of 34 and a speed of 31 knots. It belonged to a class intended for patrol duties in Spain’s maritime zone, and later records show that Cadarso was transferred to Colombia in 1997 after Spanish service. This supports the naval background of the anecdote, but it does not independently verify that the 1983 radar incident happened exactly as later retellings say.[Los Barcos de Eugenio]losbarcosdeeugenio.comLos Barcos de Eugenio Los Barcos de Guerra de EugenioLos Barcos de Eugenio Los Barcos de Guerra de Eugenio
Why the Alboran Sea setting matters
The route between Melilla and Ceuta is not just a line between two Spanish cities in North Africa. It runs through the western Mediterranean approach to the Strait of Gibraltar, a region where military, commercial, fishing and coastal traffic overlap. Modern Spanish defence reporting still treats the Strait of Gibraltar, the western Mediterranean and the Alboran Sea as areas for maritime surveillance, traffic verification and naval presence, including waters near Ceuta and Melilla. That continuity does not prove a UFO incident in 1983, but it shows why a naval radar anomaly in this corridor would have felt operationally important to those on watch.[EMAD]emad.defensa.gob.esOpen source on gob.es.
The Alboran Sea is also physically complex. Oceanographic research describes it as the westernmost Mediterranean sub-basin, roughly 150 kilometres wide and 370 kilometres long, shaped by Atlantic water entering through Gibraltar, strong fronts, gyres, internal waves and rapid circulation changes. These features matter because the sea is not a blank stage beneath a radar screen; it is a busy, changing surface environment where weather, sea state, current boundaries and vessel traffic can affect what observers think they are seeing.[Frontiers]frontiersin.orgOpen source on frontiersin.org.
For UFO history in Melilla, that maritime setting changes the likely questions. A city-light sighting may invite checks against planets, aircraft, meteors or local misperception. A surface radar echo between Melilla and Ceuta invites a different set of checks: Was there a small craft, fishing vessel, buoy, wave clutter, coastal reflection, ducting effect or radar artefact? Was the “collision course” inferred from a stable plot, or from a brief return that appeared in successive sweeps? Was anyone outside the bridge aware of it? Those are not hostile questions; they are the minimum needed to separate an unexplained contact from an under-described one.
This is why the Cadarso story occupies a distinct place in Melilla’s UFO record. It is not the best-evidenced local case, but it is the one that most clearly links Melilla to the naval imagination of the Alboran Sea: dark water, watch officers, radar screens, and the anxiety of an apparent contact that behaves as though it should be physically present but never appears.
What radar can and cannot prove here
A radar return is not automatically an object in the ordinary sense. Radar systems can show false or misleading echoes when the beam is affected by atmospheric conditions, nearby surfaces, sea clutter or abnormal propagation. The United States National Weather Service defines anomalous propagation as false radar echoes caused by non-standard propagation of the radar beam under certain atmospheric conditions, including cases where the beam bends in unusual ways and illuminates surfaces at unexpected ranges.[National Weather Service]forecast.weather.govNational Weather Service NOAA's National Weather ServiceNational Weather Service NOAA's National Weather Service
That does not mean the Cadarso echo was definitely false. It means that the public account lacks the information needed to judge it. A strong case would tell us how long the echo remained visible, whether it moved consistently, whether it appeared on more than one radar, whether lookouts saw lights or a silhouette, and whether the ship altered course or speed. It would also include mundane checks against nearby traffic and atmospheric conditions.
The most plausible ordinary categories are broad rather than precise:
- A real but unidentified surface target. A small vessel, low-profile craft or other object could have produced a short-lived contact and then been lost in clutter, shadowing or range ambiguity.
- Sea clutter or surface reflection. Marine radar can be affected by wave returns and reflective surfaces, especially when operators are watching for small contacts at night.
- Anomalous propagation or ducting. Temperature and moisture gradients can bend radar beams and produce returns that do not correspond to a nearby object in the expected way.[National Weather Service]weather.govOpen source on weather.gov.
- A brief instrumentation or interpretation issue. A contact described after the fact as a “collision course” may have been less clear in real time if only a few sweeps were involved.
The key point is that all of these explanations are compatible with the thin public version of the case. None can be proven from the available material, but each is more methodologically grounded than jumping from “radar echo vanished” to “unknown craft”.
What is missing from the public record
The biggest weakness of the Cadarso case is not that it has a possible conventional explanation. Most UFO cases do. The weakness is that the public trail is fragmentary. The Spanish Ministry of Defence’s online UFO file title list contains 83 records and includes aviation, radar and maritime-adjacent cases from many parts of Spain, including entries for the Balearic waters, the Atlantic-RIF area and sightings from named aircraft or radar stations. In the visible title list, however, there is no standalone entry named for Melilla, Cadarso or a 1983 Melilla-Ceuta patrol incident.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.es› Title list…
That absence should be handled carefully. It does not prove that no naval report existed, that no log entry was made, or that no internal note circulated. Military records can be filed under unexpected headings, retained in operational archives rather than UFO files, or never forwarded as a UFO matter at all. But for a public-facing history of Melilla UFO claims, it places the Cadarso story below cases with identifiable declassified files, dated press coverage or named witness documentation.
A stronger public record would need at least some of the following:
- the exact date and time in 1983;
- the ship’s position between Melilla and Ceuta;
- the radar type and settings in use at the time;
- the number of radar sweeps on which the echo appeared;
- bearing, range and estimated speed;
- confirmation from the bridge log or operations log;
- names or ranks of witnesses beyond the general reference to the officer of the watch;
- weather, visibility and sea-state data;
- checks against maritime traffic or exercises in the area;
- any Navy, Air Force or Ministry of Defence correspondence generated after the event.
Without those details, the case remains a reported radar scare rather than a documented radar incident.
How it compares with stronger Spanish UFO cases
The Cadarso story is useful partly because it shows the difference between a memorable anomaly and a robust case file. Spain’s better-known official UFO material includes named, dated dossiers in the Ministry of Defence collection, many of them tied to pilots, radar stations, air bases or multi-witness events. The public catalogue structure itself demonstrates what stronger documentation tends to look like: a named place, a date, a file title and a consultable record.[Biblioteca Virtual Defensa]bibliotecavirtual.defensa.gob.es› Title list…
Cadarso has a recognisable vessel and a plausible route, but it does not yet have the documentary frame that would let readers compare it fairly with those stronger cases. Its evidential status is therefore closer to a specialist anecdote preserved in the UFO literature than to a declassified Spanish military UFO file.
That distinction is important for Melilla. The city’s UFO history is already thin compared with better-documented Spanish regions. Inflating the Cadarso story into a major naval encounter would make the local record look more dramatic but less trustworthy. Treating it as a weakly documented, geographically meaningful anomaly is more useful: it preserves the story while making clear what is and is not known.
Why the story still belongs in Melilla’s UFO history
The Cadarso radar echo belongs in Melilla’s UFO history because it captures a real local pattern: Melilla’s unusual position gives some of its anomaly stories a military and maritime character. Reports from the city are not only about lights over streets or beaches; they sit beside patrol routes, Spanish sovereignty concerns, the Strait of Gibraltar, the Alboran Sea and the constant practical work of recognising what is moving through nearby waters.
That setting also explains why the story has lasted. A vanishing radar echo on a collision course is a compact and unsettling image. It involves trained naval personnel rather than casual skywatchers, an instrument rather than a naked-eye impression, and a route between two politically and strategically important Spanish cities. Those features make the anecdote memorable even though the source base is thin.
The fair assessment is therefore cautious but not dismissive. Something may have been noticed on Cadarso’s radar in 1983; the vessel, route and equipment make that technically plausible. The public evidence does not show what the echo was, whether it represented a real target, or whether the event was formally investigated. Until a logbook, official report or contemporary press account emerges, the Cadarso radar mystery should be treated as an unresolved but weakly documented Alboran Sea anomaly, significant more for what it reveals about Melilla’s maritime UFO setting than for what it proves about unidentified objects.
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