diff --git a/III/Ovodas/krasovskio.csv b/III/Ovodas/krasovskio.csv
new file mode 100644
index 0000000..0b2558c
--- /dev/null
+++ b/III/Ovodas/krasovskio.csv
@@ -0,0 +1,184 @@
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diff --git a/III/Ovodas/praktinis-1.doc b/III/Ovodas/praktinis-1.doc
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diff --git a/III/Ovodas/task1.py b/III/Ovodas/task1.py
new file mode 100755
index 0000000..815af8b
--- /dev/null
+++ b/III/Ovodas/task1.py
@@ -0,0 +1,43 @@
+#!/usr/bin/python3
+
+from math import sin, cos, sqrt, e, log, radians, pi, degrees
+
+sinq = lambda x: sin(x)**2
+sqr = lambda x: x**2
+
+# duota
+B = radians(13)
+
+# didysis pusašis
+a = 6378137
+
+# suspaudimas
+alpha = 1/298.25722
+
+# mažasis pusašis
+b = a*(1-alpha)
+
+# ekscentricitetas
+e2 = (a**2-b**2)/(a**2)
+
+# meridiano kreivumo spindulys
+M = a*(1-e2)/((1-e2*sinq(B))**3/2)
+
+# meridiano vertikalės kreivumo spindulys
+N = a/sqrt(1-e2*sinq(B))
+
+# vidutinis kreivumo spindulys
+R = sqrt(M*N)
+
+# lygiagretės spindulys
+r = N * cos(B)
+
+# Lygiagretės lanko ilgis metrais
+Sn = r/degrees(1)
+
+## Trapecijos plotas esant 1 radiano platumai
+P = sqr(b)/2 * ( sin(B)/(1-e2*sinq(B)) + 1/(2*e)*log( (1+e*sin(B))/(1-e*sin(B)) ) )
+
+g = globals()
+for v in ["b", "e2", "M", "N", "R", "r", "Sn", "P"]:
+    print("%2s: %18.4f" % (v, g[v]))
diff --git a/III/Ovodas/task2_1.py b/III/Ovodas/task2_1.py
new file mode 100755
index 0000000..f3d9d3e
--- /dev/null
+++ b/III/Ovodas/task2_1.py
@@ -0,0 +1,59 @@
+#!/usr/bin/python3
+
+import csv
+from math import degrees
+from shapely.geometry import LineString
+import matplotlib.pyplot as plt
+
+phi_p, phi_s, dphi = 13, 49, 6
+nphi = int((phi_s-phi_p)/dphi)+1
+lambda_v, lambda_r, dlambda = 0, 24, 6
+nlambda = int((lambda_r-lambda_v)/dlambda)+1
+M = 25e6
+
+# label orientations
+W, E, N, S = (-25, -5), (10, -5), (-5, 10), (-5, -20)
+
+krasovskio = {}
+with open("krasovskio.csv") as f:
+    for row in csv.DictReader(f):
+        krasovskio[float(row['phi'])] = row
+
+points = []
+for i in range(nphi):
+    phid = phi_p + i*dphi
+    betamm = float(krasovskio[phid]["r"]) * 1000 / M
+    xmm = betamm * float(krasovskio[phid]["lgU"])
+    on_y = []
+    for j in range(nlambda):
+        lambdad = lambda_v + j*dlambda
+        ymm = betamm * lambdad / degrees(1)
+        on_y.append((ymm, xmm))
+    points.append(on_y)
+
+fig, ax = plt.subplots()
+ax.set_aspect('equal')
+ax.axis("off")
+
+
+def annotate(ax, nr, point, heading):
+    text = "{}°".format(nr)
+    ax.annotate(text, point, textcoords="offset points", xytext=heading)
+
+
+# abscises
+for i in range(nphi):
+    row = [points[i][j] for j in range(nlambda)]
+    ax.plot(*(LineString(row).xy), color="xkcd:black", linewidth=.5)
+    annotate(ax, phi_p+i*dphi, row[0], W)
+    annotate(ax, phi_p+i*dphi, row[-1], E)
+
+# ordinates
+for i in range(nlambda):
+    col = [points[j][i] for j in range(nphi)]
+    ax.plot(*(LineString(col).xy), color="xkcd:black", linewidth=.5)
+    annotate(ax, lambda_v+i*dlambda, col[0], S)
+    annotate(ax, lambda_v+i*dlambda, col[-1], N)
+
+if __name__ == '__main__':
+    plt.show()
diff --git a/III/Ovodas/uzd.txt b/III/Ovodas/uzd.txt
new file mode 100644
index 0000000..9467ea2
--- /dev/null
+++ b/III/Ovodas/uzd.txt
@@ -0,0 +1,22 @@
+   ┌───────────┬──────────┬───────────────┬──────────────────────┬──────────┐
+   │Vardas,    │1 užduotis│2.1 – 2.2      │2.1 – 2.2 užduotys    │3 užduotis│
+   │pavardė    │          │užduotys       │                      │          │
+   │           │          │               │                      │          │
+   ├───────────┼──────────┼───────────────┼──────────────────────┼──────────┤
+   │Motiejus   │Duomenys  │φ[p ]=13°; [ ] │φ[А] = 17°            │φ[p ]=    │
+   │Jakštys    │pateikti  │               │                      │43°; [ ]  │
+   │           │užduotyje │φ[š] =49°;[  ] │λ[A  ]= 5°            │          │
+   │           │          │               │                      │φ[š] =    │
+   │           │          │λ[v]=0°;       │A taško koordinatės;[]│53°;      │
+   │           │          │               │                      │          │
+   │           │          │λ[r]=24°;      │φ[ B] =44°;           │λ[v ]=    │
+   │           │          │               │                      │-5°;      │
+   │           │          │1:М[0]=1:25    │λ[ B] =25°;           │          │
+   │           │          │000 000        │                      │λ[r ]= 5°;│
+   │           │          │               │B taško koordinatės;[]│          │
+   │           │          │Δφ ir  Δλ  6   │                      │          │
+   │           │          │laipsniai      │R – vidutinis kreivumo│          │
+   │           │          │               │spindulys, pagal      │          │
+   │           │          │               │reikšmę φ[v]. (žr.    │          │
+   │           │          │               │priedą)               │          │
+   └───────────┴──────────┴───────────────┴──────────────────────┴──────────┘