This stamp shows the port of Kotobrzeg with the light tower and within the foreground, a small passenger vessel used mostly for harbour and small excursion trips outside the port, in the background is a hydrofoil.
The passenger's vessel is one of the sisters ANNA OR DORATO The hydrofoil is the ZRYW I (spurt I)
The main advantage of hydrofoils was their high speed of 30-35 knots (55.6 64.8 km / h), therefore they were particularly suitable for transport. Passengers were seated in comfortable airplane seats. Apart from these undoubted advantages, hydrofoils also had a number of disadvantages. Fuel-consuming and noisy engines were expensive to run, adversely affecting the ticket price. Visibility for passengers was limited. The ability to move inside the unit was little. Even moderate waves caused pitching, which was like driving on a very bumpy road. Some malcontents complained that with these shocks and vibrations ... "their fillings were falling out". However, they should not be believed. They would probably have fallen out anyway, without the hydrofoil!
With larger waves (especially at sea), the hydrofoils had to switch to a significantly reduced speed. Back then, rolling in a confined space was not conducive to the well-being of passengers. Despite these disadvantages, hydrofoils enjoyed great popularity.
The hydrofoil ZRYW I was built in 1965 at the Wisła shipyard in Gdańsk. The hull of the hydrofoil designed by prof. Lech Kobyliński was made of hydronalium (aluminum alloy). The transport capacity of the ship was 86 people. It was developing a speed of 35 knots (64.8 km / h). Thanks to the high speed, the travel time from Szczecin to Świnoujście did not exceed 1 hour. Dimensions: L 30m, B 9m, T1 / T2- 1.3 / 2.6m. Powered by an M-50 engine 1250 hp (919.4 kW), 1 shaft.
These types of engines were installed on torpedo boats in the USSR. The gross weight of the vessel is 18 tons. It was a prototype that had several failures. After 1967, it was handed over to the Navy. It sailed on the Gdynia - Hel route. It is a pity that the production of this undoubtedly interesting construction was not developed later.
https://www.infomare.pl/historia-bialej ... roku-1960/
In 1966, Żegluga Szczecińska purchased two more units of this type but equipped with lighter Skoda engines with a capacity of 2 × 195 HP (286.6 kW). The ships were called ANNA and DOROTA.
Their maximum speed was 10.5 knots (19.4 km / h).
They were modern watercraft for those times. The two-screw drive facilitated maneuvers alongside the quays. In order to save fuel, only one engine was often used during excursions around the port or in the port roads (where haste was unnecessary).
The two rudders were powered by a hydraulic steering gear. An electric anchor winch was fitted. Remote control of engines from the wheelhouse to the control room was introduced, without the need to enter the noisy engine room. The equipment included, among others: a magnetic compass, inclinometer, finder, radiotelephone, and later radio finder. Despite the possibility of remote control of the engines, there were also machine telegraphs and the so-called "Sprechrura" (voice pipes) with endings from the wheelhouse in the captain's cabin, crew cabin, engine room, and in the gym.
In ships of this type, passenger quarters with seats were located in the superstructure in the "bow lounge" (called by the crew's "porch") on the main deck and in the "aft lounge" below this deck. In the aft part of the deck - partially roofed, there were benches. Under the bow lounge, there was a bar with a small catering facility, 2 cabins and a toilet for the crew, and stairs leading to the hall on the main deck. From the hall there was an entrance up the stairs to the control room and down the steps to the gym. Separate stairs led down to the aft lounge. In addition, in the hall, there were doors to the bow lounge, storage room, 2 toilets for passengers, as well as the entrance to the partially covered deck.
In the forepeak, there was an anchor chain chamber, while in the aft peak there was the steering gear and other technical devices. The life-saving equipment consisted of a rowing boat, rafts, and life belts. The large area of roofed and heated rooms on board was an advantage during cruises outside the summer season.
The disadvantages of this type of ship include too small area of an open deck, which was felt in sunny weather, small area of crew rooms, noisy and fuel-consuming engines and silencers prone to damage.
A noticeable disadvantage of the SZ 600 type ships for the crew and passengers was the excessive rolling tendency, even by relatively low waves. It caused intense symptoms of seasickness in passengers during strong winds, not only at sea but also in the Szczecin Lagoon. The passengers in the outermost parts of the fore and aft saloons suffered the most when rolling. Those staying amidships felt the best. On the other hand, with pitching, “full democracy” reigned, everyone was ill equally. The toilets and the exposed deck quickly filled with people paying "tribute to nature." In such a situation, the prudent sailors did not hesitate to place the appropriate number of buckets in sensitive places inside the ship. It also had its "good side",
People with knowledge of ancient Rome found another comfort in their misery. Well, the patricians of that time, during long and very abundant feasts, mastered the ability to swallow multiple times. Both ways!
This inconvenience of the described ships was also amusingly used by children, adding funny additions to the official name of the vessel, for example: "Balladyna -awiomarina", "Lilla Weneda - it will not give you health", "Ellenai -ajajaj", "Roza Weneda - Zgroza Weneda". One of the sailors illustrated the last joke for a moment during his painting work.
A humorous incident took place in times that have rightly gone by. Well, during a youth trip from Czechoslovakia, the boys briskly entered the ship, chanting the slogan propagated by the then authorities: “vaše moře, naše moře. Ahoy! " (your sea, our sea. Hello!) It was joyful and sublime. Flags were fluttering. They were to take a trip around Pomeranian Bay. The weather was fine, except a moderate swell after the recent storm. Something was rolling. After an hour, the ship returned. The green-faced passengers unsteadily disembarked. Mostly in silence. Only one of them turned back. He approached the sailor standing by the gangplank and with difficulty exclaimed: “at tento ďábel vezme tvė moře (let your sea… be damned).
https://www.infomare.pl/historia-bialej ... roku-1960/ Google translated.
Poland 1976 6z90 sg 2469, Scott ?
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