Worthless special abilities

There's a class of special abilities in Axis & Allies War at Sea that I suspect are turning out to be worthless in actual play. These special abilities award some bonus victory points for achieving some goal. Unfortunately the bonus appears to be so modest and the chances of success so limited that these special abilities aren't worth using.

The special abilities are:

SS Jeremiah O'Brien Vital Cargo 6 -- At the end of each turn, if this unit is adjacent to an island on your opponent's side of the map, you may remove this unit and score 6 victory points. You can only remove one unit with Vital Cargo from the game per turn.

Kinai Maru Vital Cargo 8 -- At the end of each turn, if this unit is adjacent to an island on your opponent's side of the map, you may remove this unit and score 8 victory points. You can only remove one unit with Vital Cargo from the game per turn.

Casabianca Secret Cargo 4 -- At the end of each turn, if this unit is adjacent to an island or coast on your opponent's side of the map and no enemy ships are local or adjacent, you may score 4 victory points. You can only use Secret Cargo once per game.

USS Gunston Hall (LSD5) Landing 10 -- Once per game, at the end of a turn, if this unit is adjacent to a coast or island on your opponent's side of the map, score 10 victory points. You can score victory points from Landing ability once per turn.

Oktyabrskaya Revolutsia Shore Support -- Once per game, instead of making a Main Gunnery attack, this unit can perform shore bombardment if this unit is in your opponent's ship deployment area. At the end of the turn, score 4 victory points.

Schleswig-Holstein Shore Support -- Once per game, instead of making a Main Gunnery attack, this unit can perform shore bombardment if this unit is in your opponent's ship deployment area. At the end of the turn, score 4 victory points.

T1 Landing Ship Landing 5 -- Once per game, at the end of a turn, if this unit is adjacent to a coast or island on your opponent's side of the map, score 5 victory points. You can score victory points from Landing ability once per turn.

They're pretty common, but can they be used? I'm going to try a poll on ForuMini to see what the opinion is.