TheMaritime.net
Dry Bulk Freight Index2,490 -1.3%Capesize3,538 -2.8%Panamax2,124 +0.7%Dirty Tanker Index1,935 +1.1%Supramax1,668 -0.1%Clean Tanker Index1,280 -1.4%Handysize947 +0.2%Dry Bulk Freight Index2,490 -1.3%Capesize3,538 -2.8%Panamax2,124 +0.7%Dirty Tanker Index1,935 +1.1%Supramax1,668 -0.1%Clean Tanker Index1,280 -1.4%Handysize947 +0.2%Dry Bulk Freight Index2,490 -1.3%Capesize3,538 -2.8%Panamax2,124 +0.7%Dirty Tanker Index1,935 +1.1%Supramax1,668 -0.1%Clean Tanker Index1,280 -1.4%Handysize947 +0.2%Dry Bulk Freight Index2,490 -1.3%Capesize3,538 -2.8%Panamax2,124 +0.7%Dirty Tanker Index1,935 +1.1%Supramax1,668 -0.1%Clean Tanker Index1,280 -1.4%Handysize947 +0.2%Dry Bulk Freight Index2,490 -1.3%Capesize3,538 -2.8%Panamax2,124 +0.7%Dirty Tanker Index1,935 +1.1%Supramax1,668 -0.1%Clean Tanker Index1,280 -1.4%Handysize947 +0.2%Dry Bulk Freight Index2,490 -1.3%Capesize3,538 -2.8%Panamax2,124 +0.7%Dirty Tanker Index1,935 +1.1%Supramax1,668 -0.1%Clean Tanker Index1,280 -1.4%Handysize947 +0.2%
Chemical Tanker🇸🇹 Sao Tome and PrincipeActive

RUI WEI

IMO
9153824
MMSI
668116337
Call Sign
S9A3137

Technical Specifications

Key Figures

Gross Tonnage
499GT
Deadweight
1,179DWT
Length Overall
63m
Beam
10m
Draught
4.5m
Year Built
1996

Intelligence

Risk & Sustainability

Risk scoreMedium
60/ 100
Safety48
Compliance82
Environment48
Carbon intensity · estimatedE

This ship has no verified emissions report. We estimate a band E from its segment, size and age (97% confidence).

Estimate, not a reported figure. Within one band 95% of the time on reported peers.

Composite Risk

Risk Score

74/100
Elevated risk60% component coverage

Multiple adverse factors, or a hard ship-specific signal, lift this hull above the fleet norm.

PSC detentionsno data
Sanctions exposureno data
Dark-fleet signal80
Hull age100
Flag register25

A coverage-weighted blend of the 3 components we could read for this hull — the weights renormalise over only the components present, so a thin read is never inflated and a hull is never credited a “safe 0” for a signal it has no row for. Higher means riskier. Derived in-house from government-open port-State-control, flag, sanctions and our own vessel data; weight it by the coverage above.

Estimated

Capacity & Classification

Cargo capacity at draughtHigh confidence
~1,179t at summer draught

Tanker · summer draught 4.5 m · 3.8 t per cm immersion

Estimated intake by draught
3.15 m~670 t
3.38 m~755 t
3.6 m~840 t
3.82 m~925 t
4.05 m~1,009 t
4.27 m~1,094 t
4.5 m~1,179 t

Estimate only — modelled from deadweight (hull geometry) using a first-principles hydrostatic model, not measured hydrostatic tables. The design draught it is anchored to is unreliable across the fleet.

Type classificationConflict
Declared
Tanker
Inferred from size
Tanker

density DWT/GT=2.36 is physically implausible for any cargo ship (declared tanker) — likely a tonnage data error

DWT/GT 2.36Beam/LOA 0.159Declared type: Chemical Tanker

The declared type conflicts with the class implied by the vessel’s size signals — a possible mis-declaration. Inferred via our shared size-based classifier.

Transparency

Risk signals

Behavioural flags raised against this vessel — each shown with the raw evidence behind it. Derived in-house from data we are entitled to publish; informational, not a determination of wrongdoing.

Type vs. size mismatchhighstrength 0.95

Declared type contradicts the size-implied class

Audit Confidence
0.95
Beam Loa Ratio
0.159
Deadweight
1,179
Declared Class
TANKER
Declared Type
Chemical Tanker
Dwt Gt Ratio
2.363
Gross Tonnage
499
Reason
density DWT/GT=2.36 is physically implausible for any cargo ship (declared tanker) — likely a tonnage data error
Size Implied Class
TANKER

Method: declared type vs size-implied class (DWT/GT density + beam/LOA fullness). Source: vessel_type_audit (sibling P3#3 job; shared coarse_class classifier).

Signals are a current-state view: a flag clears once the vessel stops tripping its detector. These are screening indicators, not a substitute for your own due diligence.

Commercial

Voyage Estimate

From 1,179 DWT · ~9 t/day · bunker @ live VLSFO.

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