Fleet profile

Helios III

Delta Marine 50.00 m 2012 United States Unknown ★ 1 Star Superyacht Guide Award

Key Facts

Length
50.00 m
Beam
10.40 m
Draught
2.90 m
Builder
Delta Marine
Year
2012
Type
Displacement
Country
United States
Charter availability
Unknown

Previous / Project Names

No previous or project names recorded.

Superyacht Guide Award

Superyacht Guide Yacht Star

★☆☆☆☆

1 Star - Listed with recognised merit

Listed with recognised merit as an official Delta Marine build. Rating is an editorial directory marker only and not a technical certification.

Official builder source checked

Last reviewed: May 14, 2026

Superyacht Guide Awards are editorial ratings based on available information and review criteria.

Helios III is a 50.00 metre displacement motor yacht built by Delta Marine and delivered in 2012. Originally delivered as Arianna, she is listed here under her current or commonly used name, Helios III. Her official Delta Marine specifications list a beam of 10.40 metres and a draught of 2.90 metres. The yacht is built in composite construction and is powered by two Caterpillar 3512B engines rated at 1,650 bhp at 1,600 rpm. This profile is based on Delta Marine's official yacht information and is intended as a concise public reference for the Superyacht Guide fleet database.

Specifications

Length50.00 m
Beam10.40 m
Draught2.90 m
ConstructionComposite
Machinery

2 x CAT 3512B, 1650 BHp @ 1600 rpm

Ownership intelligence

Accounts & Financial Intelligence

Indicative ownership costs for Helios III, separating routine operating expenditure from capital expenditure and major-refit reserves.

Estimated Low confidence
Estimated yacht value€27,300,000€20,475,000–€35,490,000
Annual OPEX€3,822,000€2,866,500–€5,159,700
Annual capital reserve€682,500€409,500–€1,092,000
Monthly ownership cost€375,375OPEX plus reserve
Five-year ownership cost€22,522,500Before acquisition and finance
OPEX / yacht value14.0%Central estimate
Annual operating expenditure
CategoryAnnual estimateStatus
Berthing, ports and agency fees€305,760Estimated
Communications, IT and security€76,440Estimated
Crew salaries and employment costs€1,337,700Estimated
Fuel and lubricants€458,640Estimated
Insurance€191,100Estimated
Maintenance and routine repairs€764,400Estimated
Yacht management and administration€114,660Estimated
Provisions and hospitality€229,320Estimated
Flag, registration, class and surveys€76,440Estimated
Tenders, toys and deck equipment€152,880Estimated
Travel, training, medical and uniforms€114,660Estimated
Capital expenditure and refit history
ItemAmountYearStatus
No reported yacht-specific capital transactions have yet been added.
Sources, assumptions and methodology

Indicative SYG estimate. Value basis: Length-and-age model using length. Central annual OPEX uses the established 14% of estimated yacht value fallback, adjusted for yacht age where available. Low and high cases reflect utilisation, condition, crewing, fuel, berthing and maintenance uncertainty. Capital reserve is shown separately from routine OPEX. Figures must be replaced or upgraded when reported accounts, invoices, court records or other yacht-specific evidence is available.

Calculation version: SYG-FI-1.0 · Last reviewed: 25 July 2026

Financial figures may include reported expenditure, source-derived calculations and indicative estimates. Estimated figures are not audited accounts, quotations or financial advice.

Yacht intelligence

Superyacht Passport

A dynamic record assembled from Superyacht Guide yacht data, sourced ownership records, construction milestones, valuations, sale listings and related reporting.

Identity

Current name
Helios III
Launch year
2012
Builder
Delta Marine

Former / other names

Arianna

Names are displayed as recorded in Superyacht Guide. Their chronological order is not implied unless supported by dated evidence.

Ownership & provenance

No sourced ownership record is currently published for this yacht.

Market snapshot

Estimated current value
€26,600,000
Valued at 4 August 2025
Estimated annual running cost
€3,724,000

Online-first value. Helios III / Helios 3 sold on 4 August 2025 with last known asking price of US$28,900,000. Approximate EUR editorial value used. Value date recorded from source context: 2025-08-04. Controlled Superyacht Guide 100-yacht value assessment batch. VALUE_CLASS: VERIFIED_SOURCE_VALUE. This classification separates direct source-backed values from public estimates and editorial/comparable estimates.

Valuation source / evidence

Values and running costs are estimates unless explicitly identified as documented transaction figures.

Yacht Value History

Permanent Superyacht Guide market records showing estimates, asking prices and, where verified in future, documented transaction or financial values.

1 recorded point
Date
4 Aug 2025
Valuation date
Record type
Superyacht Guide estimate
Value
€26,600,000
Evidence
Superyacht Guide valuation
Online-first value. Helios III / Helios 3 sold on 4 August 2025 with last known asking price of US$28,900,000. Approximate EUR editorial value used. Value date recorded from source context: 2025-08-04. Controlled Supery…
How to read this history: Superyacht Guide estimates, brokerage asking prices and documented transaction values are stored as separate record types. The first baseline record marks the beginning of permanent Superyacht Guide value-history tracking; the absence of an earlier record does not mean the yacht had no earlier market value or sale history.

Yacht timeline

Dated milestones and Superyacht Guide records, ordered chronologically.

2012
Launch year

Passport evidence

Delta Marine official yacht profile
Supports: profile
Delta Marine official fleet listing
Supports: builder_year_length
Delta Marine official image
Supports: gallery_images

Superyacht Guide distinguishes sourced records, estimates and reported information. Evidence shown here reflects sources attached to this yacht record and may be updated as new verified information becomes available.

Where can Helios III go?

350 public marina records are recorded with a maximum yacht length of at least 50.00 m.

Hobart Elizabeth Street Pier Marina

Hobart · Australia
Recorded maximum yacht length: 50.00 m
Length-capable record only. Current berth availability, beam and draught suitability must be confirmed directly.

Valentines Resort and Marina

Harbour Island · Bahamas
Recorded maximum yacht length: 50.00 m
Length-capable record only. Current berth availability, beam and draught suitability must be confirmed directly.

Bracuhy Marina Angra dos Reis

Angra dos Reis · Brazil
Recorded maximum yacht length: 50.00 m
Length-capable record only. Current berth availability, beam and draught suitability must be confirmed directly.

Bishop's Landing Marina Halifax

Halifax · Canada
Recorded maximum yacht length: 50.00 m
Length-capable record only. Current berth availability, beam and draught suitability must be confirmed directly.

Halifax Waterfront Marina

Halifax · Canada
Recorded maximum yacht length: 50.00 m
Length-capable record only. Current berth availability, beam and draught suitability must be confirmed directly.
Explore all length-capable marinas

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Estimated value
€28,000,000
Why it is similar
  • 0.0 m difference in length
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Compare yacht

Similarity is calculated from recorded Superyacht Guide data. A high match score does not imply identical design, condition, specification or market availability.

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