There was a bit of hope for the Navy at the start of the second period. Mika Tunibunawa snuck over the line for a try, which was converted by Green but West Hull’s relentless running was too much for the Navy to handle.
Lazenby showed his speed on the left wing to stride through for another try while in the 60th minute, an altercation resulted in the away side losing a man.
It was Moore involved for West Hull and a brawl with the Navy’s Jon Clay resulted in a red card for the second row.
In the final ten minutes, West Hull ran in two more tries. Luke Moss and Jamie Leigh both went over to seal the 42-12 win for the away side, securing a place in the second round.
After the game, Navy captain Nathan Lane discussed how difficult it was for the military side.
He said: “There were a really tough team, but our own boys did us proud. We all enjoyed it. We haven’t played in months so it was good to get back out on the field and go up against a team that could improve us.
“We came out strong but they found our weakness and pounced on us.
"It was an arm-wrestle for the first ten minutes but they eventually just battered us.
“We have a lot of injuries and a lot of deployments, but that’s life in the Royal Navy. You have to take it on the chin and go out with what you have got."
For West Hull, Scott Partis put in a strong performance and enjoyed being back at a Navy rugby league event.
He said: “It’s obviously a team and a place that is near to my heart.
"To come back is sort of a swansong for me coming in the twilight of my career now.
"It was good for us to win our first game and it was good to see so many old faces.
For a full replay of Saturday's match, watch the video below: