The Welsh outfit were held by Sam Allardyce's side at the Liberty Stadium, with the visitors spurning a host of first-half chances.
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"I always say the linesman and referee only have one second [to make a decision] but it's so clear when the hand is up like that," Laudrup told reporters after his side's stalemate.
"If you have the arm down, you can talk about hand to ball or ball to hand but, up there, if it touches you, nine times out of 10 it is given.
"We know that the relationship between Swansea and penalties [awarded] is not the best, even if we got one last weekend after 50 something games.
"I think in this case the linesman was in the perfect position. They said it was not deliberate, of course it's not, no one wants to take the ball with his hand."
Laudrup was also frustrated with his side's inability to break down a West Ham side that started the match without a recognised striker, suggesting that goalkeeper Jussi Jaaskelainen was the key reason for West Ham earning a point.
"I think we deserved more, on the other hand, Jaaskelainen had made two or three fantastic saves. You can't really do anything about that," he added.
"I knew it would be very difficult because they had huge success playing like this against Tottenham winning 3-0.
"We knew they would play without a striker [and[ with six in midfield, then [Ravel] Morrison, [Stewart] Downing and Ricardo Vaz Te moving up there."