GUANYANG (IMO 9110250) detained at Subic Bay, October 2026
The 31-year-old Comoros-flagged general cargo ship GUANYANG was detained at Subic Bay, Philippines, on 4 October 2026. The vessel has no recorded PSC inspection history whatsoever, has cycled through at least four flags in five years, and lists an unknown ISM manager, a profile that should concern any counterparty considering engagement.
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GUANYANG was detained at Subic Bay, Philippines, on 4 October 2026. The THETIS record does not specify the number or nature of deficiencies. The vessel's recognised organisation is listed as International Organisation Maritime Registration, and the ISM company is recorded as "UNKNOWN". These two facts alone mark this as an outlier detention: a vessel whose safety management credentials are effectively untraceable in public databases.
The vessel
GUANYANG is a small general cargo ship of 186 GT and 531 DWT, built in 1995 by Taiyo Shipbuilding in Sanyo-Onoda, Japan. She measures 53.58 metres LOA with a beam of 8.9 metres and is powered by a four-stroke diesel engine (model LH26G). At 31 years old, she is well past the age at which most tonnage of this type faces heightened scrutiny from port state authorities. She currently flies the Comoros flag, having switched to it only in September 2026. Classification is listed under "International Ship Class", a body outside the IACS framework, with status recorded as "Delivered". This is not a vessel that sits within mainstream commercial or regulatory structures.
Inspection history
The vessel's PSC record is entirely blank: zero inspections, zero deficiencies, zero detentions. For a ship that has been in service for over three decades, this is itself a significant data point. It indicates that GUANYANG has operated largely outside the ports and trading patterns where Paris MoU, Tokyo MoU, or other major regime inspections typically occur, or that she has traded under the radar of these regimes for an extended period. The absence of any inspection trail means there is no baseline against which to measure her condition. Charterers and underwriters have no third-party verification of her physical state beyond the current detention.
Ownership and management
GUANYANG is owned and managed by Top Excellent Ltd, a Taiwan-based company registered at an address in Keelung City's Qidu District. Top Excellent took over as both registered owner and ship manager/commercial manager on 22 April 2021, replacing the Japanese firm Ise Kaiun KK, which held both roles previously. The ISM manager role has been listed as "UNKNOWN" since November 1997, a nearly 29-year gap in the record that is extraordinary. The vessel was renamed from Bao Yi to GUANYANG in August 2025. The flag history tells a restless story: she sailed under Japan's flag until at least 2005, moved to Tuvalu in April 2021 when Top Excellent acquired her, passed through an unidentified flag status, shifted to Curaçao in August 2025, and then re-flagged to Comoros just one month before detention, in September 2026. Four flag changes in five years on a vessel this small is a pattern commonly associated with operators seeking the path of least regulatory resistance.
Risk profile
VesselScore rates GUANYANG at 69 out of 100, placing her in the "above average risk" band with a detention probability of 4.07%. The two heaviest score penalties come from age and flag/class profile. The age baseline component (c6) is maxed out at 10 points of penalty, reflecting the vessel's 31 years. The flag and class component (c5) contributes 8 out of a possible 10 penalty points, consistent with a Comoros flag and a non-IACS classification society. The detention component (c2) also registers 10 penalty points despite no prior detentions on record; this likely reflects proxy risk signals rather than direct detention history. AIS behaviour analysis flagged three loitering events and no AIS gaps. The vessel clears sanctions screening and has no recorded casualties. No EU MRV fuel data is available, so environmental performance components are unscored.
What to watch
The immediate question is whether GUANYANG can rectify deficiencies and secure release from Subic Bay. Given the unknown ISM manager and a recognised organisation outside the mainstream, the path to releasing the vessel may be complicated. Any charterer or underwriter should note: there is no inspection baseline for this vessel, no identifiable ISM manager, and she has changed flags four times in five years. The Comoros flag registration is barely a month old. Until a verifiable ISM certificate and a credible class survey can be produced, this vessel should be treated as unvetted tonnage in any risk framework.
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