# Sirena 78 — Complete OKF Technical Datasheet
- **Manufacturer**: SIRENA YACHTS (HQ & Manufacturer. Sirena Marine Denizcilik Sanayi ve Ticaret A.Ş.)
- **Affiliated Ecosystem Organization**: Sirena Global Ecosystem (Sirena Marine Denizcilik Sanayi ve Ticaret A.Ş. | Code: MW-SIRE-3096 | URL: https://marineworld.city/companies/sirena-global-ecosystem)
- **Company Profile**: https://marineworld.city/companies/sirena-yachts
- **Product URL**: https://marineworld.city/products/sirena-78
- **OKF Seal ID**: MW-SEAL-SIRENA-686551 (VERIFIED)
- **OKF SHA-256 Hash**: sha256-3eb124271a187f8d2f1
- **Category**: Luxury Motor Yachts
- **Price / Commercial Terms**: Commercial RFQ / Direct Inquiry (EUR - Direct Manufacturer Quotation)
- **Incoterms**: EXW Shipyard | **Warranty**: Standard Sirena Marine Manufacturer Warranty | **Lead Time**: According to shipyard production schedule
- **Certifications**: CE Classification Category A (Ocean), ISO 8666 (Small Craft - Principal Data), Beaufort 1 / Douglas 1 Sea Conditions Reference Standard, Beaufort 1 / Douglas 1 Performance Reference Conditions
- **Standards**: ISO 8666 (Small Craft - Principal Data), Beaufort 1 / Douglas 1 Performance Reference Conditions, Beaufort 1 / Douglas 1 Sea Conditions Reference Standard
- **Applications**: Long-Range Luxury Cruising, Offshore & Ocean-Going Passages, Private Yacht Owner Liveaboard, VIP Maritime Hospitality & Charter

## Description
Positioned between the 68 and 88 models, the Sirena 78 combines naval architecture by Frers Naval Architecture & Engineering with interior decor options by Cor D. Rover Design Studio. Built by Sirena Marine using GRP and carbon hybrid fiber construction, the vessel offers flexible space planning with no lower helm station on the main deck, allowing for an open kitchen/galley, freestanding dining table, and expansive saloon. Accommodation features a 4 en-suite guest cabin layout for 8 guests plus 2 crew members, along with versatile flybridge options and multiple curated interior decor packs.

## OKF Technical Specifications (53 Parameters)
- **Exterior Styling & Concept**: Frers Naval Architecture & Engineering
- **Max Speed (1550 HP opt)**: 27.0 knots
- **Beam / Width**: 6.52 m / 21' 4"
- **Economy Speed & Consumption**: 10 kn (54 lt/hr Open / 58 lt/hr Semi)
- **Standard Engines**: 2 x MAN V12 (1,400 HP each)
- **Foredeck (Bow Lounge)**: Expansive sunpad island with twin forward-facing L-shaped lounges and dining tables.
- **Transmission & Max Propeller**: V-Drive / 990 mm diameter
- **Owner's Master Stateroom**: Full-beam amidships master suite with king-size bed, private dressing area, sofa lounge, vanity desk, and large en-suite bath.
- **Hull Length (LH ISO 8666)**: 22.10 m / 72' 6" (Net GRP)
- **Cruising Speed & Consumption**: 16 kn (220 lt/hr Open / 230 lt/hr Semi)
- **Interior Decor Packs**: Inspiration (light, airy tones), Serenity (warm wood, soft finishes, cognac leather), Elegance (high-contrast dark wood, anthracite lacquer, white leather)
- **Bathrooms / Heads**: 4 En-suite + 1 Crew Head
- **Black Water Tank Capacity**: 800 lt / 211 US gal
- **Gray Water Tank Capacity**: 800 lt / 211 US gal
- **Marine Gears & Reduction**: ZF 2000 V / ZF 2050 V (Ratio: 2.467:1)
- **Hull Beam (BH ISO 8666)**: 6.52 m / 21' 4"
- **Displacement (Loaded - mLDC)**: 76.2 tonnes (Open) / 78.5 tonnes (Semi)
- **Fresh Water Tank**: 1,800 lt / 476 US gal
- **Crew Quarters**: Aft transom quarters with 2 separate berths, private crew bathroom, mess area, and direct deck/engine room access.
- **Displacement (Light Craft - MLCC)**: 65.5 tonnes (Open) / 67.7 tonnes (Semi)
- **Design Draft**: 1.68 m (Open) / 1.72 m (Semi-Enclosed)
- **Height Above Waterline (Ha)**: 7.00 m (Open) / 6.96 m (Semi-Enclosed)
- **Hull Design & Naval Architecture**: Frers Naval Architecture & Engineering
- **Flybridge Configurations**: Open (hardtop), Semi-Enclosed (protected forward helm, open aft terrace), Fully Enclosed (climate-controlled sky lounge)
- **Length Overall (LOA)**: 25.02 m / 82' 1"
- **Total Beds / Berths**: 8 Guests + 2 Crew
- **Waterline Length (LWL @ full load)**: 21.51 m / 70' 7"
- **Hull Type**: Semi-Displacement
- **Optional Engines**: 2 x MAN V12 (1,550 HP each)
- **Length (LOA)**: 25.02 m / 82' 1"
- **Main Deck Social Layout**: No lower helm station; fully dedicated open social kitchen/galley, freestanding dining table, and panoramic saloon
- **Max Draft (TMax @ full load)**: 1.68 m (Open) / 1.72 m (Semi-Enclosed)
- **Building Materials**: GRP / Carbon Hybrid Fiber
- **Crew Cabins**: 2 Independent Crew Cabins (Stern)
- **Twin Guest Cabins**: Two independent port and starboard twin cabins, each with two parallel single berths and private en-suite bathrooms.
- **Guest Cabins**: 4 En-suite Cabins (2 Doubles + 2 Twins)
- **Aft Cockpit & Platform**: Spacious alfresco dining, stair access to flybridge, and large hydraulic swim platform for tender launching.
- **Max Speed (1400 HP std)**: 25.5 knots
- **Builder / Shipyard**: Sirena Marine (Bursa / Türkiye)
- **VIP Forward Stateroom**: Bow stateroom with king-size berth, chaise lounge, private dressing table, panoramic hull glazing, and private luxury bathroom.
- **Interior Decor Studio**: Cor D. Rover Design Studio (Netherlands)
- **Height / Depth**: 7.00 m (Open) / 6.96 m (Semi-Enclosed)
- **Diesel Tank Capacity**: 9,000 lt / 2,378 US gal
- **Service Speed / RPM**: 25.5 knots
- **Cruising Range (@ 9 kn, 10% res.)**: Approx. 1,500 NM (Open) / 1,400 NM (Semi)
- **Hull Type & Certification**: Semi-Displacement / CE Cat A (Ocean)
- **Flybridge Option - Open**: Maximum open-air feeling with hardtop.
- **Flybridge Option - Semi-Enclosed**: Protected forward helm, open aft terrace.
- **Flybridge Option - Fully Enclosed**: All-weather climate-controlled sky lounge.
- **Main Deck Layout**: No lower helm station; fully dedicated to an open social kitchen/galley, freestanding dining table, and massive panoramic saloon.
- **Interior Decor Pack - Inspiration**: Light, airy tones, calm zen harmony.
- **Interior Decor Pack - Serenity**: Warm wood tones, soft finishes, cognac leather.
- **Interior Decor Pack - Elegance**: High-contrast dark wood, anthracite lacquer, crisp white leather.

## Full OKF Engineering Document
---
okf_version: "1.0"
document_id: "okf-offering-prod-sirena-yachts-1793277457675"
title: "Sirena 78"
entity_type: "PRODUCT"
company_id: "sirena-yachts"
company_slug: ""
offering_id: "prod-sirena-yachts-1793277457675"
offering_slug: "sirena-78"
knowledge_catalog_seal:
  sealed: true
  seal_id: "MW-SEAL-SIRENA-686551"
  sealed_at: "2026-10-29T14:03:13.521Z"
  hash_sha256: "sha256-3eb124271a187f8d2f1"
  authority: "Google Knowledge Catalog / MarineWorld Trust Layer"
  status: "VERIFIED"
lineage:
  source_origin: "GOOGLE_DRIVE"
  original_file_name: "Sirena78TechnicalSpecifications.pdf"
  ingested_at: "2026-10-29T14:03:13.521Z"
  enrichment_engine: "Gemini-3.6-Flash / OKF-Enrichment-Agent"
confidence_score: 0.99
classifications:
  - "TECHNICAL"
certifications:
  - "CE Classification Category A (Ocean)"
standards:
  - "ISO 8666 (Small Craft - Principal Data)"
  - "Beaufort 1 / Douglas 1 Performance Reference Conditions"
commercial:
  price: "."
  currency: "EUR"
  pricing_model: "UPON_REQUEST"
grounding_rules:
  hallucination_prevention: "STRICT_SEALED"
  allow_external_inference: false
  auto_sync_with_drive: true
---

# Sirena 78

## 1. Executive Overview
The Sirena 78 redefines long-range luxury with dual-mode hull efficiency and an innovative flybridge concept available in three configurations (Open, Semi-Enclosed, Fully Enclosed). Moving the helm to the flybridge completely liberates the main deck for social living and dining.

## 2. Technical Specifications & Verified Parameters

| Parameter | Value | Unit | Category | Confidence |
| :--- | :--- | :--- | :--- | :--- |
| Building Materials | GRP / Carbon Hybrid Fiber | - | GENERAL | 98% |
| Builder / Shipyard | Sirena Marine (Bursa / Türkiye) | - | GENERAL | 98% |
| Marine Gears & Reduction | ZF 2000 V / ZF 2050 V (Ratio: 2.467:1) | - | GENERAL | 98% |
| Flybridge Configurations | Open (hardtop), Semi-Enclosed (protected forward helm, open aft terrace), Fully Enclosed (climate-controlled sky lounge) | - | GENERAL | 98% |
| Cruising Speed & Consumption | 16 kn (220 lt/hr Open / 230 lt/hr Semi) | - | GENERAL | 98% |
| Max Speed (1550 HP opt) | 27.0 knots | - | GENERAL | 98% |
| Standard Engines | 2 x MAN V12 (1,400 HP each) | - | GENERAL | 98% |
| Main Deck Social Layout | No lower helm station; fully dedicated open social kitchen/galley, freestanding dining table, and panoramic saloon | - | GENERAL | 98% |
| Twin Guest Cabins | Two independent port and starboard twin cabins, each with two parallel single berths and private en-suite bathrooms. | - | GENERAL | 98% |
| Crew Quarters | Aft transom quarters with 2 separate berths, private crew bathroom, mess area, and direct deck/engine room access. | - | GENERAL | 98% |
| Guest Cabins | 4 En-suite Cabins (2 Doubles + 2 Twins) | - | GENERAL | 98% |
| Beam / Width | 6.52 m / 21' 4" | - | GENERAL | 98% |
| Transmission & Max Propeller | V-Drive / 990 mm diameter | - | GENERAL | 98% |
| Length (LOA) | 25.02 m / 82' 1" | - | GENERAL | 98% |
| Optional Engines | 2 x MAN V12 (1,550 HP each) | - | GENERAL | 98% |
| Hull Type | Semi-Displacement | - | GENERAL | 98% |
| Black Water Tank Capacity | 800 lt / 211 US gal | - | GENERAL | 98% |
| Economy Speed & Consumption | 10 kn (54 lt/hr Open / 58 lt/hr Semi) | - | GENERAL | 98% |
| Design Draft | 1.68 m (Open) / 1.72 m (Semi-Enclosed) | - | GENERAL | 98% |
| Height / Depth | 7.00 m (Open) / 6.96 m (Semi-Enclosed) | - | GENERAL | 98% |
| Displacement (Loaded - mLDC) | 76.2 tonnes (Open) / 78.5 tonnes (Semi) | - | GENERAL | 98% |
| Height Above Waterline (Ha) | 7.00 m (Open) / 6.96 m (Semi-Enclosed) | - | GENERAL | 98% |
| Max Draft (TMax @ full load) | 1.68 m (Open) / 1.72 m (Semi-Enclosed) | - | GENERAL | 98% |
| Waterline Length (LWL @ full load) | 21.51 m / 70' 7" | - | GENERAL | 98% |
| Length Overall (LOA) | 25.02 m / 82' 1" | - | GENERAL | 98% |
| Diesel Tank Capacity | 9,000 lt / 2,378 US gal | - | GENERAL | 98% |
| Aft Cockpit & Platform | Spacious alfresco dining, stair access to flybridge, and large hydraulic swim platform for tender launching | - | GENERAL | 98% |
| Hull Design & Naval Architecture | Frers Naval Architecture & Engineering | - | GENERAL | 98% |
| Displacement (Light Craft - MLCC) | 65.5 tonnes (Open) / 67.7 tonnes (Semi) | - | GENERAL | 98% |
| Max Speed (1400 HP std) | 25.5 knots | - | GENERAL | 98% |
| Cruising Range (@ 9 kn, 10% res.) | Approx. 1,500 NM (Open) / 1,400 NM (Semi) | - | GENERAL | 98% |
| Interior Decor Packs | Inspiration (light, airy tones), Serenity (warm wood, soft finishes, cognac leather), Elegance (high-contrast dark wood, anthracite lacquer, white leather) | - | GENERAL | 98% |
| Owner's Master Stateroom | Full-beam amidships master suite with king-size bed, private dressing area, sofa lounge, vanity desk, and large en-suite bath. | - | GENERAL | 98% |
| Foredeck (Bow Lounge) | Expansive sunpad island with twin forward-facing L-shaped lounges and dining tables | - | GENERAL | 98% |
| Service Speed / RPM | 25.5 knots | - | GENERAL | 98% |
| Exterior Styling & Concept | Frers Naval Architecture & Engineering | - | GENERAL | 98% |
| Gray Water Tank Capacity | 800 lt / 211 US gal | - | GENERAL | 98% |
| Fresh Water Tank | 1,800 lt / 476 US gal | - | GENERAL | 98% |
| Hull Beam (BH ISO 8666) | 6.52 m / 21' 4" | - | GENERAL | 98% |
| Bathrooms / Heads | 4 En-suite + 1 Crew Head | - | GENERAL | 98% |
| Total Beds / Berths | 8 Guests + 2 Crew | - | GENERAL | 98% |
| Interior Decor Studio | Cor D. Rover Design Studio (Netherlands) | - | GENERAL | 98% |
| Hull Length (LH ISO 8666) | 22.10 m / 72' 6" (Net GRP) | - | GENERAL | 98% |
| Crew Cabins | 2 Independent Crew Cabins (Stern) | - | GENERAL | 98% |
| VIP Forward Stateroom | Bow stateroom with king-size berth, chaise lounge, private dressing table, panoramic hull glazing, and private luxury bathroom. | - | GENERAL | 98% |
| Dimension: speed | 25.5 knots | - | PHYSICAL | 98% |
| Dimension: draft | 1.68 m (Open) / 1.72 m (Semi-Enclosed) | - | PHYSICAL | 98% |
| Dimension: length | 25.02 m / 82' 1" | - | PHYSICAL | 98% |
| Dimension: height | 7.00 m (Open) / 6.96 m (Semi-Enclosed) | - | PHYSICAL | 98% |
| Dimension: beam | 6.52 m / 21' 4" | - | PHYSICAL | 98% |

## 3. Compliance, Class Standards & Accreditations

- **Verified Certification**: CE Classification Category A (Ocean)

## 4. Engineering Standards & Regulatory Directives

- **Standard**: ISO 8666 (Small Craft - Principal Data)
- **Standard**: Beaufort 1 / Douglas 1 Performance Reference Conditions

## 5. Ingested PDF Technical Datasheets & Source Records

### 5.1 Sirena78TechnicalSpecifications
- **File**: `Sirena78TechnicalSpecifications.pdf` (0.0 MB)
- **Summary**: The Sirena 78 redefines long-range luxury with dual-mode hull efficiency and an innovative flybridge concept available in three configurations (Open, Semi-Enclosed, Fully Enclosed). Moving the helm to the flybridge completely liberates the main deck for social living and dining.

```text
Sirena 78
The Sirena 78 redefines long-range luxury with dual-mode hull efficiency and an innovative flybridge concept available in three configurations (Open, Semi-Enclosed, Fully Enclosed). Moving the helm to the flybridge completely liberates the main deck for social living and dining.
Positioned between the 68 and 88 models, the Sirena 78 combines naval architecture by Frers Naval Architecture & Engineering with interior decor options by Cor D. Rover Design Studio. Built by Sirena Marine using GRP and carbon hybrid fiber construction, the vessel offers flexible space planning with no lower helm station on the main deck, allowing for an open kitchen/galley, freestanding dining table, and expansive saloon. Accommodation features a 4 en-suite guest cabin layout for 8 guests plus 2 crew members, along with versatile flybridge options and multiple curated interior decor packs.

Technical Specifications:
- Length Overall (LOA): 25.02 m / 82' 1"
- Hull Length (LH ISO 8666): 22.10 m / 72' 
...[truncated]
```

## 6. Visual Media & Verified Figures

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- ![Sirena 78](https://firebasestorage.googleapis.com/v0/b/uphi-marineworld.firebasestorage.app/o/companies%2Fsirena-yachts%2Fofferings%2Fprod-sirena-yachts-1793277457675%2F1793282274476_25ptg_Ekran_Resmi_2026-10-29_15.13.20.png?alt=media&token=3cf66ebd-7dd2-4312-adc0-03e0fe4bec5e)
- ![Sirena 78](https://firebasestorage.googleapis.com/v0/b/uphi-marineworld.firebasestorage.app/o/companies%2Fsirena-yachts%2Fofferings%2Fprod-sirena-yachts-1793277457675%2F1793282285306_ncngt_Ekran_Resmi_2026-10-29_15.13.38.png?alt=media&token=996e7afa-ec91-4a68-b152-75b36dfa4672)
- ![Sirena 78](https://firebasestorage.googleapis.com/v0/b/uphi-marineworld.firebasestorage.app/o/companies%2Fsirena-yachts%2Fofferings%2Fprod-sirena-yachts-1793277457675%2F1793282562174_xqhws_Ekran_Resmi_2026-10-29_15.08.08.png?alt=media&token=c4b2ae7d-50d7-4c2e-86c7-651e074dc457)

## 7. Commercial Framework & Delivery Terms

- **Base Price**: . EUR
- **Pricing Model**: UPON_REQUEST

## 8. Operational Boundaries & Application Scope

- Long-Range Luxury Cruising
- Offshore & Ocean-Going Passages
- Private Yacht Owner Liveaboard
- VIP Maritime Hospitality & Charter

## 9. Google Knowledge Catalog Lineage & Trust Verification

- **Seal ID**: `MW-SEAL-SIRENA-686551`
- **Digest**: `sha256-3eb124271a187f8d2f1`
- **Source Origin**: `GOOGLE_DRIVE` (Sirena78TechnicalSpecifications.pdf)
- **Verification Authority**: Google Knowledge Catalog / MarineWorld Trust Layer