\documentclass{memoir}
\usepackage[demo]{graphicx}
\usepackage[fleqn]{amsmath}
\usepackage{siunitx}
\begin{document}

\begin{equation}
  f(x) = 1.0
  \label{eq:eq1}
\end{equation}

\begin{figure}[tbp]
  \centering
  \includegraphics[height=\linewidth]{somefig}
  \caption{sdadasda \si{\m}}
  \label{fig:fig1}
\end{figure}

\begin{figure}[tbp]
  \centering
  \includegraphics[height=\linewidth]{somefig}
  \caption{sdadasda}
  \label{fig:fig2}
\end{figure}

\begin{figure}[tbp]
  \centering
  \includegraphics[height=\linewidth]{somefig}
  \caption{Blabla \(\text{K\&K}\) }
  \label{fig:fig3-for-issue-337}
\end{figure}

Reference here:

\end{document}