ECO-SUB
–
24-Passenger
Acrylic
Tourist
Submarine

3D Drawing of An Acrylic 24-Passenger Eco Sub

Key Submarine Specifications

Model:

ECO-SUB

Condition:

new

Maximum Depth:

100 metres metres

Passenger Capacity:

24

Crew:

2

Location:

Available for Manufacture

Price:

POA

The ECO-SUB is a purpose-built 24-passenger acrylic tourist submarine designed to operate to a maximum depth of 100 metres in one-atmosphere conditions, carrying passengers and crew in a safe, pressurised environment throughout every dive. The defining characteristic of the ECO-SUB is its extensive acrylic viewport configuration, which provides all 24 passengers with panoramic, unobstructed views of the underwater world — a significant improvement over the limited sightlines offered by conventional porthole-based tourist submarine designs. The platform is built to Germanischer Lloyd classification for tourist submarine operations, providing the internationally recognised certification standard that supports regulatory approval in most operating jurisdictions.

Beyond its viewing capability, the ECO-SUB has been engineered to address two commercially important market requirements that are underserved by conventional tourist submarine designs. First, the submarine has been specifically designed to minimise environmental impact through careful component selection and operational configuration, making it suitable for use in marine park areas and other ecologically sensitive environments where less responsible platforms would be unlikely to secure operational permits. Second, the large-diameter access hatch and wide internal circulation space have been incorporated from the outset to accommodate disabled passengers — extending the addressable market to guests who would otherwise be excluded from the underwater leisure experience.

The ECO-SUB is available as a new build platform for worldwide manufacture, allowing buyers to configure the submarine to the requirements of their specific site, operating environment, and market positioning before manufacture commences. The platform is supported by an optional 20ft service and workshop container providing complete shore-based operational infrastructure, together with a spare parts package, pilot and crew training course, and operational startup and maintenance support programme — all available on request.

Silvercrest Submarines brings over 30 years of direct operational experience to every new build project, providing advisory support across site assessment, regulatory engagement, crew training, and commissioning. Serious buyers are invited to use the enquiry button on this page to begin the conversation — pricing is on application and reflects the agreed specification for each individual order.

Full Submarine Specifications

  • 100 metres metres maximum operational depth
  • Panoramic acrylic viewport configuration providing all 24 passengers with unobstructed underwater views
  • Wide internal circulation space and large access hatch specifically designed to accommodate disabled passengers
  • Designed to minimise environmental impact — suitable for deployment in marine park areas with sensitive ecology
  • ZEBRA battery system offering proven reliability and sustained operational endurance
  • Comprehensive ballast architecture: water hard ballast, soft ballast, and drop weight systems
  • Dual pressure air systems and dual oxygen systems for redundant life support
  • COâ‚‚ and Oâ‚‚ monitoring with dedicated COâ‚‚ scrubbers for atmospheric management
  • VHF radio and ultrasonic underwater communications fitted as standard
  • Full navigation suite: echo sounder, electronic compass, trim and heel indicators, mechanical and electronic depth meters
  • Navigation lights and powerful external lighting for night dive operations
  • Emergency breathing masks and integrated fire fighting and emergency systems
  • Alarm and insulation resistance monitoring systems throughout
  • Optional 20ft support service and workshop container with battery chargers, HP air compressor, and oxygen charging facility
  • Germanischer Lloyd classification for tourist submarine operations
  • Pilot and crew training course, operational startup programme, and spare parts package available on request

Key Features of The Submarine

  • Panoramic acrylic viewport configuration — all 24 passengers enjoy unobstructed views throughout the dive
  • Designed for marine park deployment — environmental credentials support access to protected marine areas unavailable to conventional tourist submarines
  • Inclusive disabled passenger access — large access hatch and wide internal circulation as standard design features
  • Germanischer Lloyd tourist submarine classification — internationally recognised certification supporting regulatory approval worldwide
  • ZEBRA battery technology — proven reliability and sustained performance in commercial operations
  • Dual pressure air and dual oxygen life support systems — independent redundancy as standard
  • COâ‚‚ scrubbers, COâ‚‚ monitors, and Oâ‚‚ monitors — comprehensive atmospheric management throughout every dive
  • VHF and ultrasonic communications fitted as standard — surface and through-water connectivity for every operation
  • Optional 20ft support container — complete shore infrastructure in a single mobilisable package
  • New build availability — configurable to buyer specification before manufacture commences
  • Available for worldwide manufacture and delivery
  • Full support package: training course, operational startup programme, spare parts, and maintenance support available on request
  • Silvercrest Submarines provides over 30 years of direct operational experience to support every commissioning project

Full ECO-SUB Specifications

  • Passenger Capacity: 24 passengers
  • Crew: 2
  • Maximum Operating Depth: 100 metres (300 feet)
  • Classification: Germanischer Lloyd — Tourist Submarine
  • Battery System: ZEBRA battery technology
  • Ballast Systems: Water hard ballast, soft ballast, drop weight
  • Pressure Air: Dual pressure air systems (main and reserve)
  • Oxygen Systems: Dual oxygen systems (main and reserve)
  • Atmospheric Monitoring: COâ‚‚ level monitors, Oâ‚‚ level monitors, COâ‚‚ scrubbers
  • Communications: VHF radio; ultrasonic underwater communications
  • Navigation: Echo sounder, mechanical and electronic depth meters, electronic compass, trim and heel indicators, navigation lights
  • External Lighting: Fitted as standard
  • Safety Systems: Emergency breathing masks, fire fighting and emergency systems, alarm and insulation resistance monitoring
  • Access: Large-diameter access hatch; wide internal circulation for disabled passengers
  • Support Container (optional): 20ft service and workshop container with battery chargers, HP air compressor, oxygen charging facility, and tool kit
  • Documentation: Complete technical documentation included
  • Training: Pilot and crew training course available on request
  • Condition: New manufacture
  • Availability: Available for worldwide manufacture

Key Features of the ECO-SUB

  • Panoramic acrylic viewport configuration — all 24 passengers enjoy unobstructed underwater views
  • Purpose-built for environmental sensitivity — approved for marine park deployment
  • Inclusive design with disabled passenger access built into the platform from the outset
  • Germanischer Lloyd tourist submarine classification — internationally recognised certification pathway
  • ZEBRA battery system — proven reliability in sustained commercial tourism operations
  • Redundant life support: dual pressure air and dual oxygen systems as standard
  • Comprehensive atmospheric monitoring — COâ‚‚ scrubbers, Oâ‚‚ and COâ‚‚ monitors
  • VHF and ultrasonic through-water communications fitted as standard
  • Full navigation suite including electronic compass, echo sounder, trim and heel indicators
  • Emergency breathing masks and integrated fire fighting systems throughout
  • Optional 20ft support container for shore-based operations infrastructure
  • Fully supported: training, operational startup, maintenance programme, and spare parts all available
  • New build — configurable to buyer specification before manufacture commences
  • Available for worldwide manufacture and delivery
Drawing of An Eco Sub At A Coral ReefDrawing of An Eco Sub At A Submarine Docking Platform3D Drawing of An Acrylic 24-Passenger Eco Sub

A Purpose-Built Acrylic Tourist Submarine Designed for the Modern Underwater Leisure Market

The ECO-SUB represents a thoughtful evolution in tourist submarine design, addressing two significant gaps in the broader market: environmental responsibility and inclusive passenger access. Where conventional tourist submarines prioritise capacity and revenue throughput, the ECO-SUB has been conceived from the ground up to minimise ecological disturbance, extend operational permissions into sensitive marine environments, and open its passenger manifest to the widest possible demographic — including guests with reduced mobility who would otherwise be excluded from the underwater leisure experience.

The submarine is rated to a maximum operating depth of 100 metres and carries 24 passengers and two crew in a one-atmosphere environment, maintaining surface-equivalent pressure throughout every dive. The extensive acrylic viewport configuration distinguishes the ECO-SUB from steel-hulled contemporaries: all passengers benefit from panoramic, large-diameter acrylic viewing rather than the limited sightlines of conventional porthole arrangements. For resort operators competing on the quality of the guest experience, this represents a tangible commercial advantage.

The platform is built to Germanischer Lloyd classification for tourist submarine operations — an internationally recognised certification standard that supports the regulatory approval process across most operating jurisdictions. GL classification provides operators, insurers, and local maritime authorities with confidence in the structural integrity and safety systems of the vessel, and represents the recognised benchmark for passenger-carrying submersibles in commercial tourism service.

As a new build platform available for worldwide manufacture, the ECO-SUB offers prospective operators the opportunity to configure the submarine to the requirements of their specific site, operating environment, and market positioning. Serious buyers are invited to use the enquiry button on this page to open a dialogue with the Silvercrest Submarines team — we can advise on site assessment, regulatory engagement, operational planning, and the manufacturing and delivery process from initial order through to first commercial dive.

Design Philosophy and Environmental Approach

The ECO-SUB has been engineered to occupy a specific and underserved position in the tourist submarine market: a platform capable of operating in ecologically sensitive environments where conventional tourist submarines may face operational or regulatory restrictions. The design philosophy prioritises environmental compatibility through the careful selection of components, propulsion systems, and operational configuration. This deliberate approach positions the ECO-SUB as the preferred platform for operators seeking concessions in marine park areas, coral reef environments, and other protected marine zones where the demonstrable environmental credentials of the vessel are a prerequisite for operational approval.

Viewport Configuration and Passenger Experience

The defining technical characteristic of the ECO-SUB is its extensive acrylic viewport configuration. Unlike tourist submarines that provide individual fixed portholes, the ECO-SUB’s panoramic acrylic viewing sections are designed to provide all 24 passengers with a genuinely unobstructed view of the underwater environment. This is a material differentiator for guest satisfaction and repeat visitation — the quality of the viewing experience is the primary driver of positive reviews and referral business for any tourist submarine operation. The acrylic construction also admits significantly more ambient light than steel-hulled alternatives, enhancing the perceived quality of the underwater environment at shallower operating depths.

Accessible Design

The ECO-SUB incorporates a wide internal circulation space and large-diameter access hatch specifically to accommodate disabled passengers. This design decision is commercially significant: it extends the addressable market to guests who would otherwise be unable to participate in submarine tourism. In resort and cruise port environments where accessibility is an increasing commercial and regulatory consideration, a submarine that is genuinely accessible to guests with mobility impairments holds a measurable advantage over competitors that cannot accommodate this passenger category.

Power and Battery Systems

The ECO-SUB is equipped with the ZEBRA battery system — a proven, thermally stable battery technology offering consistent performance over an extended operational life. ZEBRA batteries are well-established in commercial applications requiring reliable energy delivery over sustained cycles, and their characteristics are well-suited to the demands of tourist submarine operations where multiple dives per day over an extended season represent the normal operational profile. The battery system supports the submarine’s all-electric propulsion, eliminating the exhaust emissions and fuel handling requirements associated with diesel-electric hybrid designs.

Life Support and Safety Systems

Life support redundancy is a core design requirement in the ECO-SUB. Dual pressure air systems and dual oxygen systems provide independent reserve capacity, ensuring that a failure in any single system does not compromise the safety margin available to crew and passengers. COâ‚‚ level monitors and dedicated COâ‚‚ scrubbers maintain atmospheric quality throughout the dive, whilst Oâ‚‚ monitors provide continuous confirmation of oxygen concentration within the passenger cabin. Emergency breathing masks are fitted throughout, and integrated fire fighting and emergency systems meet the requirements of the vessel’s Germanischer Lloyd classification. Alarm and insulation resistance monitoring systems provide continuous oversight of the electrical installation, providing early warning of any developing fault condition before it can affect operations.

Navigation and Communications

The standard navigation fit comprises an echo sounder, electronic compass, mechanical and electronic depth meters, and trim and heel indicators — a complete situational awareness suite for the operating pilot. Navigation lights and powerful external lighting support both daytime and night dive operations. VHF radio provides surface communications with support vessels and shore infrastructure, whilst ultrasonic through-water communications maintain the link between the submerged submarine and surface personnel throughout the dive.

Support Infrastructure

The optional 20ft service and workshop container provides a complete shore-based operational infrastructure in a single, mobilisable package. The container houses battery chargers, a high-pressure air compressor, oxygen charging facility, and tool kit — the equipment required to turn the submarine around efficiently between dives and maintain it in serviceable condition throughout a sustained operating season. A comprehensive spare parts package is available on request, together with a pilot and crew training course and an operational startup and maintenance support programme designed to take operators from vessel acceptance through to confident independent commercial operation.

Market Applications

The ECO-SUB is well-positioned for deployment across a range of tourism and leisure markets where environmental credentials, passenger experience quality, and inclusive access are commercial priorities. Marine park concession holders and operators in protected reef environments will find the ECO-SUB’s environmental design approach particularly relevant, as the platform’s credentials support the regulatory engagement required to secure operational permits in sensitive areas. Cruise port submarine operators seeking to differentiate their offering from competitors, and resort developers building new underwater leisure attractions, will value the combination of panoramic viewing and accessible design. The submarine’s new build availability allows configuration to site-specific requirements, making it suitable for deployment in shallow tropical waters, coastal marine parks, and established resort environments worldwide.

Operational Requirements and Infrastructure

The ECO-SUB operates to 100 metres and requires conventional tourist submarine shore infrastructure: a suitable launch and recovery facility, battery charging capability (provided by the optional support container), oxygen replenishment, and an appropriate marine operation area. The all-electric propulsion system simplifies fuel logistics and eliminates the diesel handling requirements of hybrid designs. Operators should plan for site assessment, local maritime regulatory engagement, and crew recruitment and training as part of the pre-operational programme. Silvercrest Submarines can provide advisory support throughout this process, drawing on extensive direct experience of commissioning and operating tourist submarine services in multiple international markets.

New Build Manufacturing and Delivery Support

As a new build platform, the ECO-SUB is available for manufacture to a specification agreed between the buyer and Silvercrest Submarines. The manufacturing process offers the opportunity to configure the interior layout, colour scheme, and ancillary equipment fit to the requirements of the specific site and operating market. Silvercrest Submarines can advise on the full manufacturing and delivery process, including factory acceptance testing, shipping logistics, and in-water commissioning. Final pricing is subject to the agreed specification; all enquiries are handled on a price on application basis to ensure that quotations reflect the actual configuration required.

Why Choose the ECO-SUB

For operators targeting marine park concessions, premium resort environments, or markets where the quality of the viewing experience and inclusive access are primary commercial differentiators, the ECO-SUB occupies a distinct and defensible market position. Its panoramic acrylic viewport configuration, environmental design credentials, GL classification, and accessible passenger design are features that are not routinely combined in a single tourist submarine platform at this capacity and depth rating. The new build availability ensures that the submarine can be configured to the buyer’s requirements rather than adapted from a pre-existing unit.

Why Silvercrest Submarines

Silvercrest Submarines brings over 30 years of direct submarine operational experience to every sale and new build project. As active operators — not merely brokers or agents — the Silvercrest Submarines team has first-hand understanding of what tourist submarine operations require in practice: the infrastructure, the crew training, the regulatory environment, and the operational economics that determine whether a submarine business succeeds. This operational insight is available to every buyer and is reflected in the quality of the advisory support provided throughout the commissioning process. Silvercrest Submarines has operated tourist submarines in the Indian Ocean, supported Royal Navy submarine exercises, conducted landmark undersea filming projects with the BBC, and established a track record of international operations that underpins every recommendation made to clients.

Support Services

Silvercrest Submarines can arrange pilot and crew training courses, operational startup and maintenance support programmes, spare parts packages, and ongoing technical advisory services for ECO-SUB operators. The objective is to ensure that new operators reach confident independent operation as efficiently as possible, and that established operators have access to the support infrastructure required to maintain the submarine in sustained commercial service.

Next Steps for Interested Buyers

The ECO-SUB is available for new build manufacture on price on application terms. Serious buyers are invited to use the enquiry button on this page to contact the Silvercrest Submarines team directly — your message will include details of this listing so we can respond with relevant information promptly. We welcome preliminary enquiries from resort developers, marine park concession holders, and tourism operators at any stage of their planning process, and are happy to provide guidance on site assessment, operational requirements, and the manufacturing and delivery process.

This Submarine Is Ideal For:

Marine Park and Protected Area Operators

The ECO-SUB has been specifically designed to minimise environmental impact, making it the preferred platform for operators seeking concessions in marine park areas, coral reef environments, and other ecologically sensitive marine zones. The careful component selection and operational configuration support the regulatory engagement process required to secure permits in protected areas. For operators whose competitive advantage depends on access to pristine underwater environments unavailable to conventionally designed tourist submarines, the ECO-SUB’s environmental credentials provide a meaningful differentiator in the concession application process.

Inclusive Resort and Cruise Port Operators

The large access hatch and wide internal circulation space make the ECO-SUB genuinely accessible to guests with mobility impairments — a passenger category that conventional tourist submarine designs largely cannot accommodate. Resort and cruise port operators serving diverse international guest demographics will find that inclusive access broadens the addressable market and removes a significant barrier to participation for guests who would otherwise be unable to experience submarine tourism. This positions the ECO-SUB as a commercially and socially responsible choice for operators competing in established high-volume tourism markets.

Premium Resort Developers Seeking Differentiation

Resort developers building new or enhanced underwater leisure attractions will find the ECO-SUB’s panoramic acrylic viewport configuration a substantive improvement over the porthole arrangements of conventional tourist submarines. The quality of the viewing experience is the primary driver of guest satisfaction, positive reviews, and referral business in submarine tourism — the ECO-SUB’s design directly addresses this commercial priority. For new resort developments seeking a headline attraction with a distinctive environmental and experiential positioning, the ECO-SUB offers a compelling combination of passenger experience quality and environmental credentials.

New Market Entry Operators

The ECO-SUB’s new build availability allows configuration to specific site and market requirements, making it an appropriate platform for operators entering the tourist submarine market for the first time. The comprehensive support package — including pilot training, operational startup programme, and maintenance support — addresses the principal challenge facing new entrants: the gap between vessel acquisition and confident commercial operation. Silvercrest Submarines’ extensive direct experience of tourist submarine commissioning and operation provides advisory support that is not available from manufacturers without operational backgrounds.

Established Operators Seeking Fleet Renewal

Established tourist submarine operators facing certification renewal challenges with ageing vessels, or seeking to upgrade their fleet to modern viewing standards and environmental credentials, will find the ECO-SUB a technically current and commercially credible replacement platform. The GL classification pathway and comprehensive new build specification provide operators with a clear regulatory framework, whilst the panoramic acrylic viewing configuration and accessible design address modern passenger expectations that older steel-hulled submarines may not meet.

Island and Coastal Tourism Businesses

The ECO-SUB’s 100-metre depth rating and 24-passenger capacity position it well for deployment in island and coastal tourism environments where the underwater landscape is a primary attraction and guest throughput economics are a key commercial consideration. The all-electric propulsion eliminates fuel logistics complications in remote island settings, and the self-contained optional support container reduces the shore infrastructure required to support operations. Operators in the Maldives, Caribbean, Pacific islands, and similar environments will find the ECO-SUB well-matched to the logistical and environmental constraints of island-based tourism.

Summary of Core Facts

  • Panoramic acrylic viewport configuration — all 24 passengers enjoy unobstructed views throughout the dive
  • Designed for marine park deployment — environmental credentials support access to protected marine areas unavailable to conventional tourist submarines
  • Inclusive disabled passenger access — large access hatch and wide internal circulation as standard design features
  • Germanischer Lloyd tourist submarine classification — internationally recognised certification supporting regulatory approval worldwide
  • ZEBRA battery technology — proven reliability and sustained performance in commercial operations
  • Dual pressure air and dual oxygen life support systems — independent redundancy as standard
  • COâ‚‚ scrubbers, COâ‚‚ monitors, and Oâ‚‚ monitors — comprehensive atmospheric management throughout every dive
  • VHF and ultrasonic communications fitted as standard — surface and through-water connectivity for every operation
  • Optional 20ft support container — complete shore infrastructure in a single mobilisable package
  • New build availability — configurable to buyer specification before manufacture commences
  • Available for worldwide manufacture and delivery
  • Full support package: training course, operational startup programme, spare parts, and maintenance support available on request
  • Silvercrest Submarines provides over 30 years of direct operational experience to support every commissioning project

Additional Information

Environmental Credentials and Marine Park Approval

The ECO-SUB has been designed from the outset to minimise ecological disturbance. The careful selection of components, operating profile, and configuration makes this submarine suitable for deployment in marine park areas where underwater ecology is sensitive to disruption. Operators seeking access to protected marine environments or seeking to differentiate their offering on environmental grounds will find the ECO-SUB a credible platform for regulatory engagement.

Inclusive Design for Wider Market Access

The wide internal circulation space and large-diameter access hatch make the ECO-SUB one of the few tourist submarines in its class genuinely designed with disabled passenger access in mind. This substantially broadens the potential customer base for operators and addresses a market segment that is poorly served by conventional tourist submarine designs.

Germanischer Lloyd Classification

The ECO-SUB is built to Germanischer Lloyd classification for tourist submarine operations. GL certification is internationally recognised and facilitates the regulatory approval process in most jurisdictions. Operators should engage with local maritime authorities early in the site assessment process to confirm classification acceptance and any additional national requirements for passenger-carrying submersibles.

Support Infrastructure and Operational Startup

The submarine is supported by an optional 20ft service and workshop container complete with battery chargers, high-pressure air compressor, and oxygen charging facility. A comprehensive spare parts package is available on request, together with a pilot and crew training course and an operational startup and maintenance support programme. Silvercrest Submarines can provide guidance on site assessment, operational procedures, and staff training as part of the commissioning process.

New Build Lead Time and Customisation

As a new build platform, the ECO-SUB is available for manufacture to an agreed specification. Final pricing is subject to the agreed specification, and serious buyers are invited to open a dialogue to discuss site requirements, operating environment, capacity requirements, and any configuration preferences. Silvercrest Submarines can advise on the manufacturing process, delivery logistics, and the regulatory pathway from order to first commercial dive.

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