By Papua New Guinea a transport set was issued, under which four stamps with a maritime motif. The PNG Post gives by these stamps:
Coastal shipping companies like Rabaul Shipping and Lutheran Shipping, ferries passengers between coastal ports along the mainland and the outer-islands. People living along remote coastlines and waterways rely heavily on banana boats and traditional dugout canoes (logs)
powered by outboard motors.
On the stamp of K 8.70 is depict the coastal passenger ferry RITA

Built as a passenger ferry by Siong Huat at Singapore for Kambang Holden Ltd. Lae, Papua New Guinea.
Launched under the name RITA.
Tonnage 356 brt, 105 dwt, dim. 111.3 x 26.4 x 10ft.
Powered by?, speed ?
Accommodation for 317 passengers.
December 1989 completed.

She is managed by the Lutheran Shipping and makes voyages from Madang to Wewak, Aitaipe and Vanimo.
2013 In service, same name and owners. IMO No 8849517.

Papua New Guinea 2013 K.8.70 sg?, scott?

Source: http://www.miramarshipindex.org.nz http://www.equasis.org Compendium of Australasian Merchant ships 1831 – 2008 by R. Tompkins.

A type of vessel used in the Malagasy Republic on the northwest coast where Arabs intermixed with the Malagasy peoples.
These “dhow” type vessels were built as early as the 17th century. Mostly smaller and of poorer construction than similar boats elsewhere.
Sharp bow, with curved and strongly raked stern; lightly raked square stern; maximum beam well aft.
Straight sides, shallow rise to the floors.
Usually undecked, when decked called a KOTIA.
Low mat house covered midship area.
Carried a single outrigger canoe as a ship boat.
Caulked with cotton saturated with fish oil, hull coated with lime, fat and tallow.
Two sharply raking masts set lateen sails. The small mizzenmast was counterbalanced from a stubby post above the deck level.
Ranged from ca. 150-200 ton.

Malagasy Republic 1975 45f sg337, scott?

From: Aak to Zumbra a Dictionary of the World’s Watercraft

The North by the Sea on Sweden 
Pilot boat Arkö 833 belongs to the Swedish Maritime Administration and is used to maintain and repair lighthouses and other aids to ensure the safety of maritime traffic along Sweden’s coastlines. The stamp depicts the boat in the vicinity of Häradskär Lighthouse several nautical miles off the coast of Östergötland.
The red lighthouse tower is 29 meters high and was erected in 1863. 
The lighthouse consists of an iron towersupported by a pipe, which in turn is braced by steel beams and wires. Inside the tower is a spiral staircase leading up to the lantern. It is called a Heidenstam lighthouse after the designer, Gustaf von Heidenstam (read more about him on the next page), and is a type of lighthouse that can be quickly raised on hardto-access islands and islets.
Heidenstam lighthouses are a familiar sight along the coasts of Sweden. The collector’s sheet depicts the Pater Noster Lighthouse, which stands on an island at the edge of the archipelago in Bohuslän. It was functional until 1977.
Source: http://www.topoftheworld.nu/
Thanks to Jean-Louis Araignon

Building yard   Wärtsilä Marina Åbo, Finland (#1247) 
Owner   Rederi AB Sally 
Operator        - 
Length  145,2 m / 149,96 m 
Breadth 25,2 m 
Draft   5,52 m 
GT      14.623 / 15.179 
Machinery       4 * Pielstick 12PC2.5V 
Speed   21,5 kn. 
Number of passengers    2.000 
Number of cars  500 


M/S Sally Albatross came to be a ship dogged by bad luck. Ordered by Finnish shipping company Rederi Ab Sally in Mariehamn to operate for Viking Line between Helsinki and Stockholm, the ship was built by Wärtsilä Shipyard, Turku, as M/S Viking Saga in 1980.
In 1986, the ship was remodelled for cruising and renamed Sally Albatross. While docked at a shipyard in Stockholm in 1990, the ship was completely wrecked by a fire. Only the engines were left intact after the 3-day fire, so the owners decided to cut off everything above the engine room to build an entirely new superstructure. Completely reconstructed in March 1992, the ship recommenced her cruising operations between Helsinki and various ports in the Baltic.
Two years later, a new accident occurred. Delayed en route from Tallinn to Helsinki, she slant across the reef off Porkkala at 19 knots and began to take in water. The ship had to be set aground not to sink.
The ship made her last cruise in the Baltic in 2006 and was sold to Cyprus in 2007. Today, the ship operates in Greek waters under the name M/S Louis Cristal.
Details from Jean-Louis Araignon

http://en.wikipedia.org/wiki/Sally_Albatross
Aland SG?

MOSKVICH or MOSCOW (projects 515, 544, 554) is a series of Soviet built local river passenger ships.
The first MOSKVICH ships were built in 1948 in the Moscow ship repair and shipbuilding factory. MOSKVICH ships did not receive names, only numbers. The lead vessel got No M-1. They were identified by the letter M followed by the ship's number, for example M-270. Later though, some ships owned by private operators received their own names. MOSKVICH’s were built in Moscow until the 1960s.
In total more as 500 units were built.
MOSKVICH ships were used for short sightseeing trips, but also as a type of public transport, called “water trams” (concept similar to water taxi).
As of 2007, many MOSKVICHS are still in service. Most of them are used for sight-seeing, some are used as floating restaurants.
Displacement fully loaded 51,58 ton. Dim. 27.25 x 4.80 x 1.4m, draught 0.7-0.8m. Powered by a 6CHSP or ZD6 diesel engine, 150 hp or Skoda 6L160PNS 190 hp, speed 17 –20km/h. Accommodation for 132 seating passengers, maximum 150.
Type MOSKVICH ships were also built in Kherson, Ukraine. These ships were almost completely the same as Moscow-build MOSKVICH, as they were built according to the same project (544), but they were identified as type PT ships.
Similar ships were built in Leningrad also. Leningrad-built ships were almost the same as Moscow-built ships, but their superstructure was a little bit lower than on Moscow-built ships. The reason was that Leningrad had many low bridges. Leningrad-built ships are known as Leningradets-type ships, project 564K.
06 October 1968 at Cheboksary on the Volga River one of this type the VOLGA M-176 after a collision with a reefer vessel sank, with the loss of 51 people and wounded 10.
Russia 1953 40k sg?, scott? (Wikipedia. Mr. Gennadiy Sitnikov

Shewe, or shuai is the vessel of A Persian (Arabian) Gulf and Oman and means swift and undoubtedly shewes were just that in the days when they were pure sailing craft. In its modern form the shewe somewhat resembles the sambuk but, like that dhow, it has a number of variants. Generally the stem of the Gulf vessel is more raked and less curved than that of the sambuk. The top strake of planking at the poop of the shewe always projects some distance aft of the hull prop¬er, the lower edge curving up to the aftermost corner. These projecting strakes appear to afford some additional shelter to the poop and to the zoli hung over the transom. But. like many things associated with the dhows, there is rarely any known reason for their existence except that they have always been that way which is a good enough excuse for them to continue to be so. Some of the innovations in these dhows are appaling in their concept and one of them is the ungainly flying poop that is so frequently the most pro¬minent feature of both shewe and jalbaut.
State of Bahrain 1979;100f;SG 260. Source : C.Hawkins:The Dhow

Although India has to her credit some of the finest dhows ever built she also sends to sea what must surely be the most poverty stricken. Of these the padao is perhaps the best, or more convincingly the worst example. At first sight one gains the impression that it must be constructed entirely of split bamboo and palm matting, particularly if the vessel is fully laden. A close look, however, reveals a wooden hull but with planked bulwarks only at the bows and toward the stern and even these short lengths of bulwark are invariably almost completely hidden by the bamboo and split palm screens which protect the cargo from sea water that might otherwise splash aboard. Sometimes the cargo is further protected by plastering the inside of the screens with mud. I did see in Bombay a padao with the mud plastered on the outside. The transom is the only large exposed area of the padao's hull and this is often decorated with delicate painted foliation. If the padao is really worthy of its name there is a carved representation of a parrot's head at the top of the stem. It is somewhat akin to the oculus of a kotia except that the head faces forward instead of aft. It is flanked on each side with sheaves through which mooring lines pass. These sheaves are encased in wood and even if the appendages were never intended as such they do have the appearance of a pair of wings.It is astonishing how the undecked padao manages to make its way to distant Dubai where, as already related, it takes part in the smuggling of highly profitable uncustomed goods into India. The padao, though, is essentially a coasting vessel of the north-west. At Bombay's Mahim Bay they tie up stern to shore to discharge gravel which the city's build¬ing industry consumes in great quantities.

State of Qatar 1976;80d;SG 594
Sourse: Source : A Dictionary of the world’s Watercraft from Aak to Zumbra.
C.Hawkins:The Dhow