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%
Cement Carrier🇯🇵 JapanActive

RYUGU SUMIYOSHI MARU

IMO
9194361
MMSI
431601748
Call Sign
JM6678

Technical Specifications

Key Figures

Gross Tonnage
456GT
Deadweight
1,100DWT
Length Overall
62.12m
Beam
7.5m
Draught
3.8m
Year Built
1999

Live Tracking

Current Position

Live AIS · 13 d ago
Position
34.332°N · 132.500°E
Speed
0.0 kn
Course
123°
Status
Under way using engine

Intelligence

Risk & Sustainability

Risk scoreMedium
64/ 100
Safety48
Compliance95
Environment48
Carbon intensity · estimatedE

This ship has no verified emissions report. We estimate a band E from its segment, size and age (100% confidence).

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

Recent port calls

AIS-derived from our live feed.

Operational Status

Activity

Likely laid upLow confidenceFix 12 days ago

An older hull, stopped, whose last broadcast is itself no longer fresh — a cautious lay-up proxy.

Speed
0.0 kn
Nav status
Under way using engine
Last broadcast
12 days ago
Hull age
27 yr

Read from the single most-recent AIS broadcast we hold for this hull — we keep no position history, so this is a point-in-time posture, not a dwell inference. “Likely laid up” is a cautious proxy (an old hull, stopped, with a non-fresh fix), not a confirmed lay-up. Derived in-house from our own AIS feed; weight it by the broadcast age above.

Composite Risk

Risk Score

65/100
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 age88
Flag register0

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
~1,100t at summer draught

Bulker · summer draught 3.8 m · 3.7 t per cm immersion

Estimated intake by draught
2.66 m~676 t
2.85 m~747 t
3.04 m~817 t
3.23 m~888 t
3.42 m~959 t
3.61 m~1,029 t
3.8 m~1,100 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
Bulker
Inferred from size
Bulker

density DWT/GT=2.41 is physically implausible for any cargo ship (declared bulker) — likely a tonnage data error

DWT/GT 2.41Beam/LOA 0.121Declared type: Cement Carrier

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
0.121
Deadweight
1,100
Declared Class
BULKER
Declared Type
Cement Carrier
Dwt Gt Ratio
2.412
Gross Tonnage
456
Reason
density DWT/GT=2.41 is physically implausible for any cargo ship (declared bulker) — likely a tonnage data error
Size Implied Class
BULKER

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 1,100 DWT · ~9 t/day · bunker @ live VLSFO.

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