\begin{tikzpicture}           
% Grid
\draw [rounded corners,menublue,fill=gray99, ultra thin]
(0,3) -- (0,0) -- (7,0) -- (7,6) -- (0,6) -- (0,3);
\draw [color=gray95, thin] (3.5,0) -- (3.5,6);
\draw [color=gray95, thin] (3.91096,0) -- (3.91096,6);
\draw [color=gray95, thin] (4.32192,0) -- (4.32192,6);
\draw [color=gray95, thin] (4.73288,0) -- (4.73288,6);
\draw [color=gray95, thin] (5.14384,0) -- (5.14384,6);
\draw [color=gray95, thin] (5.55479,0) -- (5.55479,6);
\draw [color=gray95, thin] (5.96575,0) -- (5.96575,6);
\draw [color=gray95, thin] (6.37671,0) -- (6.37671,6);
\draw [color=gray95, thin] (6.78767,0) -- (6.78767,6);
\draw [color=gray95, thin] (3.08904,0) -- (3.08904,6);
\draw [color=gray95, thin] (2.67808,0) -- (2.67808,6);
\draw [color=gray95, thin] (2.26712,0) -- (2.26712,6);
\draw [color=gray95, thin] (1.85616,0) -- (1.85616,6);
\draw [color=gray95, thin] (1.44521,0) -- (1.44521,6);
\draw [color=gray95, thin] (1.03425,0) -- (1.03425,6);
\draw [color=gray95, thin] (0.623288,0) -- (0.623288,6);
\draw [color=gray95, thin] (0.212329,0) -- (0.212329,6);
\draw [color=gray95, thin] (0,3) -- (7,3);
\draw [color=gray95, thin] (0,3.41096) -- (7,3.41096);
\draw [color=gray95, thin] (0,3.82192) -- (7,3.82192);
\draw [color=gray95, thin] (0,4.23288) -- (7,4.23288);
\draw [color=gray95, thin] (0,4.64384) -- (7,4.64384);
\draw [color=gray95, thin] (0,5.05479) -- (7,5.05479);
\draw [color=gray95, thin] (0,5.46575) -- (7,5.46575);
\draw [color=gray95, thin] (0,5.87671) -- (7,5.87671);
\draw [color=gray95, thin] (0,2.58904) -- (7,2.58904);
\draw [color=gray95, thin] (0,2.17808) -- (7,2.17808);
\draw [color=gray95, thin] (0,1.76712) -- (7,1.76712);
\draw [color=gray95, thin] (0,1.35616) -- (7,1.35616);
\draw [color=gray95, thin] (0,0.945205) -- (7,0.945205);
\draw [color=gray95, thin] (0,0.534247) -- (7,0.534247);
\draw [color=gray95, thin] (0,0.123288) -- (7,0.123288);
% Grid
\draw [rounded corners,menublue, ultra thin]
(0,3) -- (0,0) -- (7,0) -- (7,6) -- (0,6) -- (0,3);


% Draw Wedge: ownship:twedge
\draw [color=black,fill=gray95, very thin] 
(3.73425,3.12329) -- (3.73425,5.17808) arc (90:202.5:2.05479) -- (3.73425,3.12329) arc (202.5:90:0) -- cycle;
% Draw Wedge: ownship:plus_67
\draw [color=gray60, very thin] 
(3.73425,4.76712) -- (3.73425,4.76712) arc (90:202.5:1.64384) -- (2.21554,2.49422) arc (202.5:90:1.64384) -- cycle;
% Text Label
\draw [color=black] (1.12877,4.19178) node {\scriptsize
contact
};

% Text Label
\draw [color=black] (4.47397,3.28767) node {\scriptsize
ownship
};

% Text Label
\draw [color=black] (2.58356,2.38356) node {\tiny
$247.5^{\circ}$
};

% Text Label
\draw [color=black] (2.70685,3.83014) node {\tiny
$112.5^{\circ}$
};

% Text Label
\draw [color=black] (3.98082,4.60274) node {\tiny
$0^{\circ}$
};

% Text Label
\draw [color=black] (5.87123,0.821918) node {\scriptsize
$\beta \geq 247.5^{\circ}$
};

% Ship drawing: inside triangle
\draw [color=gray90, fill=gray90, ultra thin] 
(3.67848,2.91781) -- (3.73425,3.32877) -- (3.79001,2.91781);
% Ship drawing: left side of bow 
\draw [color=black,fill=gray90, ultra thin] 
(3.67848,2.91781) .. controls (3.63151,3.17466) .. (3.73425,3.32877);
% Ship drawing: right side of bow 
\draw [color=black,fill=gray90, ultra thin] 
(3.79001,2.91781) .. controls (3.83699,3.17466) .. (3.73425,3.32877);
% Ship drawing: stern line 
\draw [color=black, ultra thin] 
(3.67848,2.91781) -- (3.79001,2.91781);
% Ship drawing: inside triangle
\draw [color=white, fill=white, ultra thin] 
(1.65579,4.26463) -- (2.06425,4.33645) -- (1.6897,4.15837);
% Ship drawing: left side of bow 
\draw [color=black,fill=white, ultra thin] 
(1.65579,4.26463) .. controls (1.88477,4.39193) .. (2.06425,4.33645);
% Ship drawing: right side of bow 
\draw [color=black,fill=white, ultra thin] 
(1.6897,4.15837) .. controls (1.95009,4.18725) .. (2.06425,4.33645);
% Ship drawing: stern line 
\draw [color=black, ultra thin] 
(1.65579,4.26463) -- (1.6897,4.15837);
% Draw Point: contactx:ship_ctr
\draw [color=black,fill=black, thin] 
(1.86849,4.27397) circle (0.02cm);
% Draw Point: ownship:ship_ctr
\draw [color=black,fill=black, thin] 
(3.73425,3.12329) circle (0.02cm);
% Draw Line: ownship:cn_north
\draw [color=gray25, ->, thin] 
(3.73425,3.12329) -- (3.73425,4.35616);
% Draw Line: ownship:cn_south
\draw [color=gray25, dotted, thin] 
(3.73425,3.12329) -- (3.73425,1.06849);
% Draw Circle: ownship:range
\draw [color=darkblue, very thin] 
(3.73425,3.12329) circle (2.05479cm);
\end{tikzpicture}  
