Notes

The functions, selection and optional configurations of small multi-functional workboats
Small multi-functional work boat,or multi-fuctional boat,auxiliary boat,anchor boat,work boat, are widely used in fields such as fishery, marine engineering, emergency rescue, administrative law enforcement, and water tourism due to their high flexibility and wide range of applicable scenarios. Their core advantage lies in the ability to quickly adapt to different task requirements through modular design or optional configurations. The following explanation is provided from three dimensions: functional positioning, selection logic, and optional configurations, to help users plan in a targeted manner.

work boat

I. Core Functions of the Small multi-functional work boat,or multi-fuctional boat,auxiliary boat,anchor boat,work boat,

The "multi-functionality" of small workboats is mainly reflected in their ability to quickly switch between different task scenarios. Common functions can be classified into the following categories:

Basic homework function

• Cargo transportation: It is used for the transportation of small quantities of goods (building materials, fishery catches, engineering materials) in inland rivers and coastal waters, and should have a certain load capacity (usually 5-50 tons) and deck loading space.

Personnel transportation: Carrying crew members, passengers (such as fishermen, engineering teams, tourists), it is necessary to be equipped with seats and life-saving equipment. In some scenarios, private cabins are required (such as law enforcement vessels).

Short-distance supply: Provide fuel, fresh water, food and other supplies to offshore platforms and remote islands. Special oil and water transfer pipe interfaces need to be designed.

2. Fishery-related functions on the Small multi-functional work boat,or multi-fuctional boat,auxiliary boat,anchor boat,work boat

Fishing support: Equipped with live water tanks (for temporarily holding catches), winches (for trawl and purse seine operations), ice fresh-keeping compartments (for low-temperature preservation), and some fishing vessels need freezing compartments (for long-distance operations).

• Aquaculture maintenance: used for feeding in fish farms (rotary feeders), water quality monitoring (portable water quality probes), net cage cleaning (high-pressure water guns), and fault repair (diver support).

3. Engineering and Maintenance Functions

• Water-based construction: Equipped with small cranes (1-5 tons), concrete mixers, and pile drivers, it is used for bridge pile foundation construction, wharf maintenance, and channel dredging (in conjunction with cutter suction dredgers).

Pipeline,cable laying: Equipped with cable reels (submarine optical cables, power cables) and tension control devices, suitable for short-distance laying in shallow sea areas.

• Measurement and Exploration: Install multi-beam echo sounders, side-scan sonars, and GPS positioning systems for channel mapping and underwater topography exploration (a stable platform is required to reduce shaking).

4. Emergency Rescue and Public Services for the Small multi-functional work boat,or multi-fuctional boat,auxiliary boat,anchor boat,work boat

• Emergency rescue and disaster relief: Equipped with lifeboats (releasable), lifebuoy throwers, demolition tools (hydraulic shears), and drainage pumps (for flood control). Some need medical cabins (first aid kits, stretchers).

• Fire support: Equipped with a fire monitor (with a range of ≥ 50 meters) and a foam fire extinguishing system, it is used for close-range firefighting in port fires and ship fires.

Law enforcement patrol: Equipped with high-intensity searchlights, loudspeakers, 360° rotatable surveillance cameras, and evidence preservation compartments (for storing seized items), it meets the patrol requirements of maritime, fishery administration, environmental protection and other departments.

5. Leisure and Special Functions

Tourism and sightseeing: Modified into sightseeing boats (with sunshades and viewing windows) and yachts (with upgraded interiors and entertainment facilities), suitable for tourist reception on lakes and rivers.

• Research support: As an auxiliary vessel for oceanographic research vessels, it is used for sample transportation and the deployment of temporary observation points (such as buoy release).

II. Selection Logic for Small multi-functional work boat,or multifuctional boat,auxiliary boat,anchor boat,work boat

The selection should be based on three core factors: usage scenarios, working environment, and budget cost. Special attention should be paid to the following dimensions:

1. Hull type selection: Determines basic performance

Common types of small working vessels include monohulls, catamarans, trimarans, and planing hulls, each with its own advantages and disadvantages:

• Monohulls: They have a simple structure, low cost, and relatively shallow draft (1-2 meters), making them suitable for inland rivers and shallow seas (such as rivers, estuaries, and nearshore areas). However, their seakeeping performance is average, and they tend to be bumpy in rough seas.

Catamarans/tri-hull vessels: The wide-body design enhances stability (suitable for high sea conditions), and the large deck area facilitates equipment layout. However, they have a relatively high cost and a slightly deeper draft (2-3 meters), making them suitable for nearshore or wavy waters (such as the southeast coast) bottom discharge barge .

• Planing boat: With a sharp bow and concave bottom, it can "cut through" waves, offering low resistance at high speeds (up to 25-30 knots), but its stability at low speeds is average. It is suitable for scenarios requiring rapid response (such as emergency rescue).

It is recommended that single-hull vessels be preferred for inland rivers and shallow seas; catamarans be chosen for offshore and rough waters; and wave-piercing vessels be selected for high-speed response requirements.

2. Key Parameters: Match Task Requirements

Parameter Description Typical Range (Small Vessels)

Dimensions (length × width) affect mobility and loading capacity. 10-30 meters (length) × 3-8 meters (width)

The tonnage (gross tonnage) determines the carrying capacity (carrying weight ≈ gross tonnage × 0.7), ranging from 5 to 100 tons.

Speed affects operational efficiency (such as transportation time and rescue response speed) at 10-25 knots (for ordinary diesel engines) and 25-35 knots (for high-speed engines).

Endurance and operation time = fuel tank capacity ÷ fuel consumption per hour, which should match the operation radius of 200 - 800 nautical miles (conventional fuel); 50 - 200 nautical miles (electric).

The draft depth determines whether it can enter shallow water areas (such as inland rivers and fish ponds). 1-3 meters (conventional); ≤ 1.5 meters (shallow draft type)

If it is used for inland river aquaculture feeding (with a working radius of 50 kilometers and daily round trips required), a single-hull vessel (with a draft of no more than 1.5 meters), a gross tonnage of 10 to 20 tons, a speed of 12 to 15 knots, and a range of over 200 kilometers is sufficient.

3. Power System: Impact on Cost and Environmental Protection of the Small multi-functional work boat,or multi-fuctional boat,auxiliary boat,anchor boat,work boat

• Traditional fuel engines (diesel,gasoline): Technologically mature and powerful (suitable for large tonnage,high-speed requirements), but with high fuel consumption and emission pollution (must comply with IMO Tier III or domestic environmental protection standards).

Electric,hybrid: Zero emissions (or low emissions), low noise (suitable for ecologically sensitive areas such as nature reserves), but battery costs are high and range is limited by battery capacity (requires charging facilities).

• LNG (liquefied natural gas): Low emissions (25% less carbon emissions than diesel), long range, suitable for medium and long-distance operations, but requires a high level of supporting gas refueling stations.

It is recommended that electric power be preferred for inland waterways and scenic spots; hybrid power be chosen for near-sea and long-duration voyages; and fuel engines be selected for high-power requirements.

III. Optional Configurations: Expand Functions as Needed for the Small multi-functional work boat,or multi-fuctional boat,auxiliary boat,anchor boat,work boat

The multi-functionality of small workboats is mainly achieved through modular optional configurations. Users can flexibly select and install according to the task requirements. The following are common configuration categories:

Deck and loading equipment for the Small multi-functional work boat,or multi-fuctional boat,auxiliary boat,anchor boat,work boat

Lifting equipment: Electric,hydraulic cranes (lifting capacity 1-10 tons), folding booms (saving deck space), used for cargo lifting and net handling.

• Winches and cables: Hydraulic winches (traction force 5-50 tons), lifeboat winches (for releasing,retrieving lifeboats), and anchor winches (anchor weight 500-2000kg), used for fixing vessels or towing operations.

• Cargo holds , containers: Live water tank (with oxygen pump for fish breeding), chilled hold (insulated with polyurethane, -2°C to 5°C), dry cargo hold (sealed and dust-proof), oil tank (independently isolated to prevent leakage).

2. Safety and Life-saving Appliances

• Life-saving equipment: lifeboats (rigid inflatable boats, capable of carrying 6-20 people), life buoys (with reflective strips and self-illuminating lights), life jackets (one for each person, meeting ISO standards).

Fire-fighting equipment: Portable fire extinguishers (CO₂,dry powder), fixed water cannons (flow rate 500-2000 L per min), fire alarm system (smoke sensors + automatic sprinklers).

• Navigation Safety: AIS (Automatic Identification System), radar (X + S band, detection range 10 - 30 nautical miles), GPS + Beidou dual-mode positioning, electronic chart (ECDIS), searchlight (1000W, range 200 meters).

3. Task-specific equipment

• Fishing equipment: winch (hydraulically driven, suitable for trawl nets and purse seines), live water tank oxygenation system (micro-porous aeration), fish finder (sonar for detecting fish schools), freezer (at -18℃, with a volume of 5-20 m³).

• Engineering configuration: hydraulic rock breaker (for reef breaking), concrete pump truck (with a delivery range of 30-50 meters), pile driver (hydraulically driven, pile diameter 200-500mm), and cutter suction dredger (with a discharge pipe diameter of 200-300mm).

Rescue configuration: medical cabin (with built-in stretcher, defibrillator, and oxygen cylinder), diving equipment (diving suit + air cylinder + underwater lamp), unmanned aerial vehicle hangar (automatic take-off and landing, for reconnaissance), helicopter hovering platform (small boat type optional, weight limit 2-5 tons).

4. Comfort and Informatization on the Small multi-functional work boat,or multi-fuctional boat,auxiliary boat,anchor boat,work boat

• Cabin configuration: Cockpit (air conditioning + shock-absorbing seats), crew cabin (bunk beds + storage cabinets), public activity area (dining table + bathroom).

• Information systems: VHF radio (maritime communication), satellite phone (communication in remote sea areas), video surveillance (covering the entire ship, storing for 30 days), Internet of Things platform (real-time monitoring of ship position, fuel consumption, and equipment status).

IV. Summary: Selection Recommendations

1. Clarify core uses: Prioritize the determination of main tasks (such as fishing, engineering, rescue), and then match the ship type and basic parameters.

2. Balance performance and cost: Avoid over-configuration (for example, small inland river vessels do not need to install high-power cranes), but reserve space for upgrades (such as reserving equipment installation interfaces on the deck).

3. Compliance first: Ensure compliance with local ship inspection regulations (such as China CCS certification, EU CE certification), environmental protection requirements (emission standards, noise limits).

4. Supplier services: Choose manufacturers that provide customized design and after-sales maintenance (such as engine warranty, equipment debugging) to reduce later operating costs.

Based on the above logic, users can quickly identify the functions, types and configuration combinations of small multi-functional workboats according to their actual needs, achieving efficient utilization of "one boat for multiple uses".
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