\begin{tikzpicture}           
% Grid
\draw [rounded corners,menublue,fill=gray99, ultra thin]
(0,9) -- (0,0) -- (12,0) -- (12,18) -- (0,18) -- (0,9);
\draw [color=gray95, thin] (6,0) -- (6,18);
\draw [color=gray95, thin] (0,9) -- (12,9);
% Grid
\draw [rounded corners,menublue, ultra thin]
(0,9) -- (0,0) -- (12,0) -- (12,18) -- (0,18) -- (0,9);


% Ship drawing: inside triangle
\draw [color=gray90, fill=gray90, ultra thin] 
(3.76957,0.782609) -- (6,17.2174) -- (8.23043,0.782609);
% Ship drawing: left side of bow 
\draw [color=black,fill=gray90, ultra thin] 
(3.76957,0.782609) .. controls (1.8913,11.0543) .. (6,17.2174);
% Ship drawing: right side of bow 
\draw [color=black,fill=gray90, ultra thin] 
(8.23043,0.782609) .. controls (10.1087,11.0543) .. (6,17.2174);
% Ship drawing: stern line 
\draw [color=black, ultra thin] 
(3.76957,0.782609) -- (8.23043,0.782609);
\end{tikzpicture}  
