The Custom Line Navetta 38 is a displacement of 38.76 meters and 299 GT, with a beam of 8 meters, 243 tons full load and two MAN V12 1400 CR from 1.400 hp. It declares 15 peak knots and about 2,800 miles to 10 knots, has 32,500 liters of oil and combines Naiad fins with three Seakeeper gyroscopes.
Here the goal is not to describe luxury, but to configure the ship. Performance data remains declared until the individual specimen is tested. Propulsion, stabilization, air conditioning, dashboard, beach clubs and hotel loads must work as a controlled system by a crew of six people, with twelve guests and four operational bridges.
Reference configuration
| System | Summary | Delivery gate |
|---|---|---|
| Dimensions | 38,76 × 8,00 × 2,27 m | Asset and ports |
| Weights | 202 / 243 t | Final weight report |
| Stack | 299 GT | Certificate and layout |
| Propulsion | 2 × MAN V12 1400 CR | Curves and freshmen |
| Speed | 15 / 12 / 10 kn | Maximum, Cruise, Cheap |
| Fuel / water | 32.500 / 4.000 l | Usable and reserve |
| Autonomy | 2.800 nm to 10 kn | Exemplary curve |
| Stabilization | Pine + 2 NG18 + 1 NG9 | Logical and absorbent |
| Cabins | 5 guests + 4 crew | Services and escape routes |
First decision: fixing the mission
A seasonal Mediterranean configuration, an ocean cruise and a charter program have different stocks, spare parts, connectivity and redundancies. Before choosing the optionals you define days without port, real number of guests, tender, speed profile, outdoor climate and assistance available in the planned areas.
From this matrix descend electrical balance, water production, cold capacity, respect parts and crew shifts. The optionals that do not support the mission add mass and complexity without increasing reliability.
Weight report: forty-one tons to govern
Between 202 and 243 tons there are fluids, people, tenders, equipment and margins. Each variant must have weight, altitude and longitudinal position. The combination of gyroscopes, Jacuzzi, hard tops, furniture and appliances on high decks deserves specific attention, because the effect is not equal to that of a mass placed in the bilge.
At the test we read fishing with known tanks, dinghy on board and final equipment. The load plan indicates allowed combinations and allows you to control future refits. Correctors and fins should not mask a static imbalance.
Two MAN 1.400 hp: test setting
The propulsive line includes engines, gearboxes, axles, propellers, cooling, drains and power supply. Reports, diameters, electronic versions and freshmen are frozen in the file. The test takes turns, speed, consumption, load, pressure and temperature on stabilized points and reciprocal routes.
Fifteen knots are the maximum declared, twelve cruise and ten economic reference. They should not be confused: the gate covers sustainable regimes, thermal margins and comfort. After the return, oils, seals, supports, filters and sentiments are inspected, repeating the control that had highlighted any anomalies.
Thirty-two thousand five hundred liters: build the real curve
The nominal volume is not entirely usable. Bottom, reserve, trim and generators reduce the oil available for route. Tanks, travases, returns, valves, vents and separators must be represented in a simple scheme to be used during an air.
The 2,800 miles declared at 10 knots are transformed into plane only after defining engine consumption, hotel load, weather margin and reserve. Measured supplies and generator hours build the baseline; the estimate must be updated when changing hull, propellers or weight.
Triple stabilization: fins and gyroscopes are not equivalent
Pinne Naiad, two Seakeeper NG18 and a NG9 cover different operating conditions. The configuration requires a matrix for navigation, railing, port entrance, maintenance and failure. Absorptions, cooling, start times and limits must be readable by the bridge and known by the crew.
The test compares the response of separate systems and combined in repeatable conditions. Manual exclusion occurs, loss of a sensor, alarms and switching of power supply. Reducing the roll does not mean correcting an incorrect trim or weight distribution.
Plancia Team Italia: seven displays, one logic
The dashboard incorporates a 44-inch front display, two 27 side, two 24 touch and two 7-screen controllers. The amount of interfaces does not guarantee redundancy: you need to map processors, networks, power supplies, sensors and functions that remain available after a failure.
The test includes loss of a display, a data node and a power line, as well as switching to local commands. Alarms, priorities and event recording must be consistent. Infrared filtering glasses declared up to 65% are evaluated together with night visibility, reflections and debriation.
Sun bridge: Jacuzzi, bar and barbecue under load
The surface of about 65 square meters concentrates a bathtub, outdoor kitchen, bar, furnishings and lighting. Filling, heating, unloading and treatment of Jacuzzi generate hydraulic and electrical spikes. The budget also considers air conditioning, kitchen and water production at the same time.
Drainage, local overloads, held and navigation configuration must be documented. The wind acts on hard tops and furnishings; glazed parapets and walkways are felt wet. The procedure establishes when emptying the tub and how to secure each element.
Beach club and stern movements
Beach club and cockpit together exceed 70 square meters, with openable mowers and mobile platform. Actuators, sensors, interlocks, doors and parapets are a single system. Each movement is tested for cycles, including manual procedure and blocking in the navigation position.
The estate is controlled after testing, not only in the dock. Drainage, emergency arrests and communications with the bridge must also work with guests and tenders in operation. Access to the sea cannot reduce separation between water and technical premises.
Garage and dinghy from 5,65 meters
The main garage is designed for a 5.65-metre jet diesel Williams and other water toy; in the bow can find a medium of 2.85 meters or a water bike. Weights, batteries, fuels, cradles and deduction points enter the separate exemplar.
The gate includes varo, recovery, washing, charging and restoration of the seal. Ventilation and fire detection must consider chemical of the batteries and fuels present. Maintenance access routes remain free with all means provided.
Performance: record conditions, not impressions
The displacement hull is tested with sea, wind, depth, temperature and load noted. Speed and consumption are measured at a stabilized level; two opposite steps reduce the current and wind effect. They also observe the response to the rudder, stop, vibration and behaviour on the waves.
The result is not a story of sensations. It is a table that the shipowner will be able to repeat after famine, helical change or addition of equipment. Future deviations become a diagnostic signal.
Night balance and energy continuity
At night they work stabilization, air conditioning, refrigeration, lighting, connectivity, pumps and cabin services. The generators are tested on multiple loads and during the transfer between units. Batteries, inverters and UPS must support the defined functions without creating a common fault point.
The black-start test starts from a controlled condition and checks priority, reboot sequence and alarms. Software versions, selectivity and autonomy of essential users enter the minutes. Silence must not be achieved by reducing safety margin.
Guest cabins: services for twelve people
The configuration includes five cabins and can accommodate twelve people with two buses. The capacity must be supported by air, water, waste water, sockets, lighting and escape routes. Each cabin is tested with doors, cabinets and beds in the position of use.
Technical panels must open without disassembling furniture. Oblays, obscurants and discharges receive dedicated evidence. The symmetrical layout does not eliminate acoustic or thermal differences: the values are detected room by room.
Shipowner's Suite: forty square meters
The suite on the main deck integrates two wardrobes and a bathroom divided into two areas with central shower which can be used as a steam bath. Vapor, ventilation, waterproofing and condensate must be tried together, because the failure of a component can involve adjacent finishes and premises.
The acoustic baseline separates motors, generators, climate, pumps and hydrodynamic noise. Temperature, humidity, lighting and obscuring are recorded. Comfort must remain repeatable in the different operating conditions, not only during a visit to port.
Cooking, pantry and crew flows
The kitchen and pantry are connected by reserved routes, so the crew does not cross the guest areas. The configuration must be simulated with service for twelve, reassessment cabins and handling on the bridge. Doors, mountain huts, ramps and passages must avoid crossings and preserve the escape routes.
Extraction, air compensation, appliances, refrigeration and washing are activated simultaneously. Heat, odours, absorption and discharges are measured. Stoves and drawers require deemed suitable for the ship's motorcycle.
Sky lounge openable on three sides
The upper deck exceeds 90 square meters and the living room can open on three sides. Frames, stained glass, sensors and movements must retain sealing and alignment after navigation. Air conditioning changes radically between closed and open space: automations should not attempt to compensate for uncontrolled dispersions.
The test tests interlocks, drains, rain detection if present and manual closing. Audio-video hardware and devices should not prevent access to mechanisms. The large openings are part of both architecture and security.
High efficiency air conditioning
Cabins, lounges, kitchen, bridge and technical premises have different loads. The summer test uses full occupancy, sun and active appliances; it records mandate, recovery, moisture, condensate and absorption. The remote areas should not be compensated by overcooling the neighboring areas.
Filters, pumps, exchangers and valves must be accessible. A high temperature reduces the margin and duration of engines, generators and electronics.
SCR ready and IMO Tier III choice
The SCR predisposition allows to configure the reduction of nitrogen oxides compatible with IMO Tier III. The decision involves space, mass, reagent, tanks, dosage, sensors, discharges and maintenance. It must be taken before customizations occupy the necessary volumes.
Testing tests alarms, reagent quality, operating temperatures and degraded modes. The crew must know about supply, conservation and diagnosis; an environmental technology cannot become a matte system entrusted only to external assistance.
Audio-video and connectivity as a plant
Home automation, audio system, host network, light control and satellite connection share power and wiring with onboard functions. Segmentation, access, configuration backup and updates must be governed. The entertainment network should not interfere with navigation or monitoring.
Restoration, loss of access point and local operation without external connection. Cabinets, ventilation and UPS are dimensioned for real heat. Manuals and administrative credentials are delivered securely to the shipowner.
Water, waste and hotel autonomy
The 4,000 litres of water are a reserve, not the entire autonomy. Dissalator, pumps, boiler and treatment must support twelve guests, six crew members, kitchen and laundry. Flow, quality, pressure and absorption are verified with more contemporary utilities.
Black and gray require capacity, vents, alarms and consistent procedures with the route. Planning integrates waste, spare parts and maintenance: the 2,800 propulsive miles only serve if hotel facilities can accompany them.
Fire prevention and emergency management
Revelation, fixed extinction, locks, ventilation and fuel interceptions are compared with drawings. Each sensor must appear on the central with a non-ambiguous name. The escape routes are covered with furnishings and luggage in the real configuration.
The crew feels failure isolation, remote arrests and communications. Tender, batteries and kitchen require specific scenarios. A certified system remains incomplete if those on board cannot recognize and manage the degraded mode.
acceptance verification sequence
Delivery proceeds for documents, weights, dry inspection, tests in port, testing at sea and recheck after return. Matricoles, as-built schemes, software, fluid analysis, alarms stored and spare parts are compared to the installed. Each relief has responsibility and closing criterion.
The Navetta 38 offers a rare technical approach: 299 GT, great autonomy, extended volumes and multi-level stabilization. The best configuration is not the one with more accessories, but the one where weight, energy, cooling, maintenance and procedures remain legible. This is what turns a complex superyacht into a truly governmentable ship.