Modern Weapons

1980 to Present
120 mm/46 TAK 120
Turunmaa Class and Pohjanmaa
 57 mm/70 Marks 1 and 3
Helsinki, Hamina and Pohjanmaa Classes
 40 mm/70 Mark 3
Turunmaa, Rauma, Hämeenmaa and Pohjanmaa Classes
 30 mm/63 AK-230
Tuima Class (ex-USSR Osa II type)
23 mm/87 Sako
Most Warships
23 mm/60 Sako
Small Craft
12.7 mm NSV
Small Craft

Historical Weapons

Coastal Defense / Destroyer Main and Secondary Guns

305 mm/52 Pattern 1907
Coastal Defenses
 254 mm/45 Bofors
Väinämöinen Class
 130 mm/55 Pattern 1913
Gunboats
 105 mm/50 M1932 Bofors
Väinämöinen Class
 102 mm/60 Pattern 1911
Gunboats
 100 mm/56 Pattern 1940
Hämeenmaa Class (modified USSR Riga)

Smaller Caliber and Anti-Aircraft

75 mm/50 Pattern 1892
Torpedo Boats