As have been said, throughout most of the 1960s, 1970s and 1980s the main land component of the Polish amphibious assault forces was the
7 Łużycka Dywizja Desantowa (
7th Lusatian Landing Division) formed in 1963. Because the names of the almost all military units (with several exceptions) were classified, in official statements it was called euphemistically
Jednostka Obrony Wybrzeża (
Coastal Defence Unit - as it was officially stated that the purpose of these forces is conducting counter-landings on the rear areas of the advancing enemy) or more casually
Błękitne Berety (
Blue Berets).
Although formally a division, sub-divided into regiments,
7 ŁDD was in fact an oversized brigade, with full (wartime) complement being just around 6000 men.
Its organization was as follows:
-Command and Staff in Gdańsk,
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4 Pułk Desantowy (4th Landing Regiment) in Lębork,
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34 Budziszyński Pułk Desantowy (34th Landing Regiment "of Bautzen") in Słupsk,
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35 Gdański Pułk Desantowy (35th Landing Regiment "of Gdańsk") in Gdańsk,
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11 Batalion Czołgów Pływających (11th Batallion of Amphibious Tanks) in Słupsk
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41 Dywizjon Artylerii (41st Artillery Batallion) in Gdańsk
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20 Dywizjon Artylerii Rakietowej (20th Rocket Artillery Batallion) in Gdańsk,
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18 Batalion Saperów (18th Batallion of Engineers) in Lębork,
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7 Batalion Remontowy (7th Maintenance Batallion) in Słupsk,
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52 Kompania Rozpoznawcza (52nd Reconnaissance Company) in Lębork,
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29 Bateria Artylerii Przeciwlotniczej (29nd AAA Battery) in Gdańsk,
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7 Kompania Chemiczna (7th Chemical Company) in Słupsk,
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23 Kompania Łączności (23rd Communications Company) in Gdańsk,
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7 Kompania Zaopatrzenia (7th Supply Company) in Gdańsk,
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23 Kompania Medyczna (23rd Medical Company) in Gdańsk,
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33 Kompania Dowodzenia Szefa OPL - (33rd Command Company of the Chief of Air Defence) in Gdańsk,
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Kompania Ochrony i Regulacji Ruchu - (Security and Traffic Regulation Company) in Gdańsk,
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Pluton Dowodzenia Szefa Artylerii - (Command Platoon of the Chief of Artillery) in Gdańsk.
Each of the Landing Regiments was in fact a large batallion, with company structure. Initially they were composed of the HQ, 3 landing companies, company of amphibious tanks, battery of mortars, battery of anti-tank guns and several platoons - reconnaissance, air defence, pioneers and signals, as well as logistics and maintenance elements - total complement (for wartime) was 649 men, including 71 officers, 7 PT-76 tanks, 4 BRDM recce vehicles, 1 armored personnel carrier, 3 PTG amphibious vehicles, 9 82mm mortars, 6 120mm mortars, 4 57mm anti-tank guns and 3 14,5mm AA machine guns - plus of course associated support equipment as well as the infantry arms.
From the mid 1960s onwards the structure of regiments was expanded and their equipment modernized.
By mid 1980s they consisted each of: HQ, 5 landing companies (each with 3 mechanized and 1 mortar platoon), amphibious tank company, mortar battery, anti-tank battery, maintenance company and several platoons - reconnaissance, air defence, pioneers, communications and logistics) equipped altogether with 16 PT-76 tanks (3 platoons of 5 tanks each, 1 tank in company HQ), 4 BRDM-2 recce vehicles, 45 TOPAS armored personnel carriers (some sources say: 40), 15 82mm mortars, 6 120mm mortars, 6 anti-tank missile launchers and certain amount of air-defence weapons - plus of course associated support equipment as well as the infantry arms.
11th Batallion of Amphibious tanks had a total of 40 PT-76 tanks in 3 companies of 13 vehicles plus Batallion commanders' vehicle.
41st Artillery Batallion - had deliberately misleading name as it was equipped with surface-to-surface rockets - 4 9K52 Luna-M (FROG-7) launchers divided between two batteries, plus an air defence platoon.
20th Rocket Artillery Batallion - despite the name, was mostly barrel-artilery unit, with two batteries of 6 2S1 Gvozdika 122mm SP howitzers each and one battery of 6 9K51 Grad (BM-21) MRLs.
52nd Reconnaissance Company was equipped - at least at later periods - with 10 BRDM-2 armored cars (3 platoons with 3 cars each).
It's unclear to me how much air defence equipment was used by the division, only that they were 23mm ZU-23-2 AAA guns and 9K32 Strela-2 MANPADS. Most probable configurations are based around platoons with either 3 ZU-23-2 guns, or 2 ZU-23-2 guns and 3 9K32 missiles.
After the long series of Pr.770/771/776 medium landing ships, next addition to the amphibious assault vessels of the Polish Navy was of somewhat smaller size. Three medium landing craft of the Project 719 (NATO code: Marabut) entered service in 1975 in the
Dywizjon Kutrów Desantowych (
Landing Craft Squadron) of the
2 BOD. They were experimental units with hulls made of plastic-fiberglass composite which happened to be not particularly well suited to the conditions of those boats' service. As a result they were all decommissioned already in 1984.