<?php if(!empty($this->item->extraFields->bateau2->value)): ?>
            <p class="TabGras">AUTRES <span> CHOIX SIMILAIRES :</span></p>  
            <?php echo $this->item->extraFields->bateau2->value; ?>
            <?php endif; ?>

[28] => stdClass Object
        (
            [id] => 33
            [name] => Bateau 2
            [value] => nom bateau 2
            [type] => link
            [group] => 1
            [published] => 1
            [ordering] => 29
            [url] => index.php
            [text] => nom bateau 2
            [attributes] => 
            [alias] => bateau
        )