Parlevinker

A parlevinker (or sweet merchant/kadraaier) was a traveling merchant who sold goods to skippers on rivers and in harbors using a small boat as a floating supermarket. 

He supplied inland vessels with foodstuffs (bread, milk, vegetables, fruit), household goods, cigarettes, clothing, and more.

Skippers often had no opportunity to shop ashore for days, so this was a welcome service involving personal contact. 

The profession originated mainly in the 19th century and was typically Dutch/Belgian (Rhine, Meuse, Scheldt, harbors). 

Parlevinker boats often featured a recognizable green and white checkered trim. 

It is nearly extinct: the last Dutch parlevinker (Wim van Hooren with Time is Money) stopped in 2008. The death blow was the abolition of tax exemptions (excise duty) in 2007. 

Nowadays, the term sometimes still refers to a specific ship in a museum or a hospitality venue (e.g., in the Efteling), but the classic profession no longer exists. 

It was a unique piece of maritime entrepreneurship.

https://dorpenstedennederland.blogspot.com/

https://fieggentrio.blogspot.com/

Patrol Vessel

A patrol vessel is a small, versatile vessel (up to approximately 200 tons displacement) deployed by navies, port authorities, or government agencies for patrol and surveillance duties. 

They operate primarily in inland waters, coastal areas, and estuaries and are equipped with light armament (such as machine guns), radar, and equipment for vessel escort, inspection, and emergency response. Examples include the Balder class of the Royal Netherlands Navy and the RPAs in the Port of Rotterdam, which have an average lifespan of 25 years. 

Modern versions, such as hybrid aluminum vessels, meet high class requirements and are used for maritime security and law enforcement.

https://dorpenstedennederland.blogspot.com/

https://fieggentrio.blogspot.com/

Platform Supply Vessel

A platform supply vessel (PSV or OSV), often called a "supplier," is a versatile vessel in the offshore industry. 

It supplies drilling and production platforms with food, spare parts, lubricants, construction materials, and drilling fluids, and removes waste, used oil, and chemicals. 

Sometimes, it transports personnel via a "crew basket." 

Many PSVs are also equipped as rescue vessels (SAR). Some combine supply and anchor handling (AHTS).

https://dorpenstedennederland.blogspot.com/

https://fieggentrio.blogspot.com/

Rowing Vlet

A rowing vlet is a small, flat-bottomed vessel, traditionally used in harbours for mooring and unmooring ships. 

Originally they were rowed, but nowadays they are often equipped with a motor. 

They are characterised by a black and white chequered band, an obligation for recognisability and are often used by organisations such as the Royal Rowing Association Eendracht (KRVE) in Rotterdam since 1895. 

Rowing vlets are efficient, manoeuvrable and suitable for maritime services, such as towing mooring lines. 

Modern versions can be electrically powered.

https://dorpenstedennederland.blogspot.com/

https://fieggentrio.blogspot.com/

Tugboat

A tugboat is a boat or ship that is designed to tow and that has a large capacity in relation to its length. 

In the steam era usually with paddle wheels, nowadays with a screw drive that is optimized for pulling power (pulling screw). 

According to shipping legislation, any ship that tows another ship is a tugboat. 

Since 2019, exceptions have been made for recreation. 

Towing lines are usually attached to a bitt, towing hook or towing drum.

https://dorpenstedennederland.blogspot.com/

https://fieggentrio.blogspot.com/

Water boat

A water boat is a ship that is used to deliver water to sea and inland vessels. 

It is almost always an inland vessel, a tanker. 

This does not only concern drinking water, but also demineralised water. 

The water is issued by companies that specialise in this transport.

https://dorpenstedennederland.blogspot.com/

https://fieggentrio.blogspot.com/

Houseboat

A houseboat is a collective name for boats that are designed in such a way that people can live on them and whose primary function is also living. 

A houseboat is no longer intended for travelling. 

A houseboat can be a pontoon with a kind of house on it, but also a sailing ship or, what is common, an old inland vessel that may or may not have been permanently withdrawn from service.

https://dorpenstedennederland.blogspot.com/

https://fieggentrio.blogspot.com/

Icebreaker

Icebreakers are built to break thick ice and are usually used to keep a shipping route passable. 

Icebreakers are very expensive to build and operate, especially in terms of fuel consumption. 

They are often uncomfortable when sailing on the open sea because they can be sensitive to roll.

https://dorpenstedennederland.blogspot.com/

https://fieggentrio.blogspot.com/