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Incat Crowther Delivers New High Performance Patrol Vessel

Leading digital shipbuilder Incat Crowther has delivered a new high-performance, state-of-the-art 20-metre patrol vessel to Thailand’s Customs Department. Unveiled at a launching ceremony attended by dignitaries and senior leaders from the Customs Department in April 2023, the 20-metre monohull patrol vessel, Customs Boat 523,is now patrolling the oceans off the coast of Thailand.

Delivered in partnership with Thai shipbuilder Seacrest Marine, Customs Boat 523 can operate at speeds of up to 35 knots with a cruising range of up to 300 nautical miles. The delivery to Thailand’s Customs Department is the latest successful collaboration between Seacrest Marine and Incat Crowther, with the duo successfully delivering six vessels for government departments in Thailand including both the Customs Department and the Thai Police Department.

Designed for maximum performance and efficiency, Customs Boat 523 boasts an efficient hull paired with twin-propeller propulsion. The design of the vessel has also been tailored to the Customs Department’s operations with a low draft allowing for operation in shallow coastal waters. The large wheelhouse on the main deck provides optimal sightlines for the crew, while the vessel also has high-powered search, side, and flood lights to allow for operations in darkness. The vessel’s hull deck provides space for a large galley and comfortable sleeping quarters for three crew on rotation.

Tanapat Hemangkorn, Managing Director of Seacrest Marine, said the delivery of Customs Boat 523 was the result of a successful collaborative process between Incat Crowther and Seacrest Marine.

“We have worked closely with Incat Crowther over several years now to deliver vessels to multiple Thai Government agencies. In the case of Customs Boat 523, Incat Crowther provided a proven monohull platform that would meet the department’s performance requirements,” said Mr Hemangkorn.

“The final product is a vessel that is truly tailored to the operational requirements of Thailand’s Customs Department, and we are incredibly pleased to have delivered another state-of-the-art vessel in partnership with Incat Crowther.”


Ship Description 20m Monohull Patrol Vessel
Ship Name Customs Boat 523
Design Number IC21022
Status In Service
Construction Material Marine Grade Alluminium
Principal Dimensions
Platform Monohull
Length Overall 20.50 m
Length Waterline 20.14 m
Beam 5.50 m
Draft Hull 0.85 m
Depth 3.10 m
Crew 6
Fuel 4 680 L
Fresh Water 479 L
Sullage 365 L
Propulsion and Performance
Service Speed 20.0 Knots
Maximum Speed 37.0 Knots
Range 300 Nautical Miles at 20 Knots
Main Engines 2 X MTU 10V2000 M96L
Installed Power 2 X 1 193 kW at 2450 rpm
Gearboxes ZF 3000
Propulsion 2 X Propellers
Flag Thailand
Class NSCV Fast Craft (Fire and Safety), Lloyds Register SSC Patrol G3 (Structure)

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