Engines; for marine propulsion, (other than outboard motors), spark-ignition reciprocating or rotary internal combustion piston engines

HS v2022 Code: 840729

About engines; for marine propulsion, (other than outboard motors), spark-ignition reciprocating or rotary internal combustion piston engines

HS code 840729 covers a critical component of the marine industry - spark-ignition reciprocating or rotary internal combustion piston engines used for marine propulsion, excluding outboard motors. These engines play a vital role in powering a wide range of vessels, from small recreational boats to large commercial ships, making them an essential part of global trade and transportation. Understanding the production and application of these engines provides valuable insights into the broader maritime sector and its impact on the global economy.

Production process

The production of engines covered under HS code 840729 typically involves several key steps. Manufacturers begin by casting the engine block and cylinder heads, often using advanced metal casting techniques. The crankshaft, pistons, and other internal components are then precision-machined to tight tolerances. Assembly includes the installation of the fuel system, ignition system, and other ancillary components. Finally, the engines undergo rigorous testing and quality control measures to ensure they meet performance and safety standards before being shipped to marine vessel manufacturers and distributors.

Production inputs

The production of 840729 (Engines; for marine propulsion, (other than outboard motors), spark-ignition reciprocating or rotary internal combustion piston engines) requires a range of inputs, including high-quality steel and aluminum alloys for the engine block and components, specialized lubricants and coolants, and advanced electronic components for the fuel and ignition systems. Manufacturers also rely on specialized machinery and tooling, such as CNC machines, casting equipment, and assembly lines, to ensure efficient and precise production.

Production outputs

The primary output of HS code 840729 is spark-ignition reciprocating or rotary internal combustion piston engines designed for marine propulsion, excluding outboard motors. These engines are used in a wide variety of vessels, including 890120 Ships; tankers, 890190 Vessels; for the transport of goods and other vessels for the transport of both persons and goods, and 890400 Tugs and pusher craft. The engines produced under this code are essential components that enable the global maritime industry to function, supporting international trade, transportation, and economic development.

Revisions to 840729

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 840729. The most recent 1 version of this code (840729) is in the HS v2022 system (this version):

This page shows the most recent version of code 840729.

Family tree for engines; for marine propulsion, (other than outboard motors), spark-ignition reciprocating or rotary internal combustion piston engines

    graph LR
    A["<a href='/classifications/hs/v2022/84'>84: Machinery and mechanical appliances, boilers, nuclear reactors; parts thereof</a>"]
A --> B["<a href='/classifications/hs/v2022/8407'>8407: Reciprocating or rotary internal combustion piston engines</a>"]
B --> C["<a href='/classifications/hs/v2022/840729'>840729: Engines; for marine propulsion, (other than outboard motors), spark-ignition reciprocating or rotary internal combustion piston engines</a>"]

    B --> D["<a href='/classifications/hs/v2022/840710'>840710: Engines; for aircraft, spark-ignition reciprocating or rotary internal combustion piston engines</a>"]
B --> E["<a href='/classifications/hs/v2022/840721'>840721: Engines; outboard motors for marine propulsion, spark-ignition reciprocating or rotary internal combustion piston engines</a>"]
B --> F["<a href='/classifications/hs/v2022/840731'>840731: Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity not exceeding 50cc</a>"]
B --> G["<a href='/classifications/hs/v2022/840732'>840732: Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity exceeding 50cc but not exceeding 250cc</a>"]
B --> H["<a href='/classifications/hs/v2022/840733'>840733: Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity exceeding 250cc but not exceeding 1000cc</a>"]
B --> I["<a href='/classifications/hs/v2022/840734'>840734: Engines; reciprocating piston engines, of a kind used for the propulsion of vehicles of chapter 87, of a cylinder capacity exceeding 1000cc</a>"]
B --> J["<a href='/classifications/hs/v2022/840790'>840790: Engines; rotary internal combustion piston engines, for other than aircraft or marine propulsion</a>"]

    

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    classDef highlight color:#000,fill:#fff,stroke:#000,stroke-width:5px



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class B level4
class C level6
class D level6
class E level6
class F level6
class G level6
class H level6
class I level6
class J level6

  class C highlight

  %% class A level1
  %% class B,C level2
  %% class D,E,F,G,H,I level2
  %% class J,K,L,M,N,O,P level3
  %% class C highlight