DYT 400 Hybrid Large Sea Sweeper

DYT 400 is a high-technology sea cleaning vessel built on EPS Marine’s years of accumulated experience. The series’ defining feature is its hybrid (electro-hydraulic) drive system: the vessel uses separate power sources for propulsion and for general electrical needs. EPS Marine classifies sea surface cleaning vessels of 15 meters and longer as large sea cleaning boats; DYT 400 is the most technologically advanced trash boat in this category.

DYT 400 has a twin-hull (catamaran) structure. The vessel is built entirely from Marine Grade Aluminum (EN 5083 and EN 6082 alloys) — the hull, superstructure and conveyor belt chassis are all made from this marine-grade aluminum. This material choice provides strong resistance to seawater corrosion while supporting a maximum-size, minimum-weight design concept.

Depending on the market and the terminology used, DYT 400 is also referred to as a trash boat, trash vessel, sea sweeper, sea cleaning vessel, sea clean-up vessel, sea cleaning boat, sea clean-up boat, garbage collection boat, garbage collection vessel, ocean cleaning vessel, or ocean clean-up vessel.

Hybrid Power Architecture: Two Separate Generator Layers

DYT 400’s hybrid architecture is based on fully separating propulsion loads from general electrical loads. Two large generators (each rated at least 450 kVA) power only the propulsion system: this power drives hydraulic pumps via synchronous reluctance (SynRM) electric motors, which in turn drive two 360-degree azimuth thrusters — each thruster has a minimum hydraulic input power of 200 kW.

A separate, smaller generator (68 kVA) supplies the vessel’s general electrical needs — lighting, living quarters, bilge systems, conveyor belt control systems and other auxiliary equipment. This separation provides a stable general power supply independent of the propulsion load, and allows the large generators to be optimized purely for propulsion. The large generators can run in parallel with automatic or manual synchronization, so propulsion continues uninterrupted even if one generator fails.

This hybrid sea sweeper design delivers more precise speed control, lower noise levels and higher operational reliability compared with conventional diesel-mechanical drive vessels.

Speed, Range and Maneuvering

At full load displacement, in calm weather and sea conditions, DYT 400 can reach a speed of at least 10 knots and has a cruising range of approximately 300 nautical miles. The azimuth thrusters complete a full 360-degree rotation in no more than 20 seconds, enabling fast and precise positioning during marine litter collection operations.

Conveyor Belt and Waste Collection System

DYT 400 is fitted with two conveyor belts: a forward (bow) collection conveyor that gathers litter from the sea surface, and a storage conveyor that stacks and stores the collected waste. At the end of the bow conveyor are two sweeping arms made from ‘flush grid’ belt material that lets water pass through; these arms open and close, drawing surface litter directly onto the belt.

DYT 400’s distinguishing feature is that discharge is also carried out through the same bow collection conveyor. During discharge, waste on the storage belt is transferred back onto the bow conveyor and discharged from there — eliminating the need for a separate discharge conveyor. Both conveyor belts are bidirectional. The conveyor shafts are made of stainless steel, the chassis of Marine Grade Aluminum, and the belt material is modular plastic belting, resistant to seawater and UV exposure.

Conveyor belt rotation speed has three stages (low, medium, high; in both directions) and is adjusted via a hydraulic proportional valve. All belt movement can be controlled wirelessly, from the living quarters or from the bridge console.

DYT 400 Hybrid Large Sea Sweeper

Main Specifications

Not: Boyut, tahrik ve jeneratör verileri onaylı teknik şartnameden alınmıştır. Atık depolama kapasitesi (m³) bu şartnamede sayısal olarak belirtilmediği için tabloya eklenmedi; netleşince güncellenebilir.

Use Cases

• Sea surface cleaning
• Marine litter collection
• Algae removal
• Lake cleaning
• Dam cleaning
• Oil collection from the sea surface
• Oil spill response
• Boom deployment
• MARPOL waste collection from boats and yachts

What Is DYT 400? (Quick Definition)

DYT 400 is the most technologically advanced model in EPS Marine’s large sea cleaning boat class, defined for vessels 15 meters and longer. Its defining feature is a hybrid (electro-hydraulic) drive system: two large generators (min. 450 kVA) for propulsion, and one separate small generator (68 kVA) for general electrical needs. It is a twin-hull, fully Marine Grade Aluminum, hydraulically driven sea sweeper with two azimuth thrusters.

DYT 400 is a trash boat that collects plastic waste, marine litter, algae and oil-derived pollutants in ports, straits and open-sea conditions. Another distinguishing feature is that discharge is carried out through the bow collection conveyor itself, without requiring a separate discharge belt.

Quick Info Card

• Product name: DYT 400 — Hybrid Large Sea Sweeper
• Manufacturer: EPS Marine Türkiye
• Category: Large sea cleaning boat (15 meters and longer)
• Primary function: Collecting marine litter, plastic, algae and oil pollution from the sea surface
• Key feature 1: Hybrid power architecture — 2 x min. 450 kVA generators for propulsion, separate 1 x 68 kVA generator for general electrical needs
• Key feature 2: Discharge is carried out through the bow collection conveyor — no separate discharge belt
• Hull material: Fully Marine Grade Aluminum (EN 5083 / EN 6082)
• Size and performance: 15.50 m length x 6.40 m width, max. 1.50 m draft, at least 10 knots, 300 nautical mile range

FAQ

Q1: What is the DYT 400 hybrid sea sweeper?

DYT 400 is the most technologically advanced model in EPS Marine’s large sea cleaning boat series; its defining feature is a hybrid (electro-hydraulic) drive system. It is a twin-hull (catamaran) vessel built entirely from Marine Grade Aluminum, hydraulically driven by two 360-degree azimuth thrusters. It belongs to the large sea cleaning boat category, covering vessels 15 meters and longer.

Q2: How does DYT 400’s hybrid drive system work?

DYT 400 has two separate generator layers. Two large generators (each at least 450 kVA) power the propulsion system: this power drives hydraulic pumps via synchronous reluctance (SynRM) electric motors, which power two azimuth thrusters, each with a minimum input power of 200 kW. A separate small generator (68 kVA) covers the vessel’s general electrical needs, such as lighting, living quarters and auxiliary systems. This hybrid architecture separates propulsion and general electrical loads, improving efficiency and operational reliability.

Q3: How does DYT 400’s conveyor and discharge system work?

The vessel has a bow collection conveyor that gathers litter from the sea surface, and a storage conveyor that stacks the collected waste. DYT 400’s distinguishing feature is that discharge is also carried out through the same bow collection conveyor: waste on the storage belt is transferred back to the bow conveyor and discharged from there. This removes the need for a separate discharge belt, making the system simpler and easier to maintain.

Q4: What speed and range can DYT 400 achieve?

DYT 400 can reach at least 10 knots in calm weather and sea conditions, with a cruising range of approximately 300 nautical miles. These capabilities make the vessel suitable for long, uninterrupted sea surface cleaning operations in large coastal cities with extensive shorelines, such as Istanbul.

Q5: What is DYT 400’s hull material?

DYT 400 is built entirely from Marine Grade Aluminum (EN 5083 and EN 6082 alloys) for its hull, superstructure and conveyor belt chassis. This material choice provides resistance to seawater corrosion while supporting a maximum-size, minimum-weight design.